Hi forum, what a great forum

I wrestled internationally for my country in Greco, though of course did some crosstraining in freestyle, mma and BJJ as we all do , before I got too old that is
I have only just started reading these western martial arts books and was presently surprised to see people doing all the wrestling in them. I always thought wrestling would work, especially in armored fighting, but for years no one would believe us. Its only until the UFC people thought we could even fight lol. Now its showing we have a place in armored battle !
As to the question. I think freestyle wrestling is an excellent background in wrestling as to be effective at high levels you must learn the basics before the exceptions. By that I mean certain things like attacking weakpoints(eyes, cheeks etc) and the ability to pull out a knife(!) will change the shape of the wrestle yes but these facts should not put you off learning pure wrestling technique in its entirety first and practicing it as high a level as you can. It is so important to learn correctly. And no it is not like fencing where the sport has turned so crazy the sport techniques are unrealistic. Humans still have two arms, two legs, controlling the head still control opponents direction and controlling his hips stills controls his mass etc.
Then once you are wrestling instinctively you can open your style to accommodate the nasty stuff. This is the best way to learn and in my opinion the masters of sword fighting or knightly training back in the day would have done it the same way.
It really is worth learning wrestling unencumbered by exceptions just to get the true feel and for everything to become intstictive. I found streetfighting( or bouncing as we called in on doors in the 1980's/1990s if you have quick takedowns or arm drags etc you will grab and execute them and assailant will be winded on ground before the assailant with a bottle or long fingernails etc has even realised he is thrown. Now if he has some skill to resist the throw, you may be in trouble, but again just learning that hip throw or arm drag, or ankle pick to perfection is really a nice thing.
Now as to best wrestling to learn.
Firstly looking at my own stlye for battle I think Greco is good for any close formation/riot scenarios as uses no attacks on legs, so Greco wrestling is upright, you will not bend down too far, lose sight of surroundings, and you will be less likely to be pushed or tripped over accidentally as a result.More on this later.
Greco 1-1 itself is not as effective however if the other person has good freestyle or takedowns. We do manage to hold off and takedown judo guys more often than they us though and generally BJJ but we are also crosstraining leg defence to do this. Pure Greco in theory would not.
As mentioned it has no leg attacks, and little leg defence. It is also not visually based wrestling, there is little concept of timing and spacing. In fact the wrestle does not start until both parties are ready to start pushing. You can in fact wrestle eyes closed in greco and we do this as a sparring tool in training to develope the correct 'feel'. In Greco to score it is a matter of pushing and pulling and trying to overload opponent into a minor overeaction that will form the first part of your throw. In other words the whole time you are basically trying to springload each other and take advantage when the spring slips. As this is difficult it is why Greco matches generally low scoring and look messy to the average guy.
The moves are very simple to learn HOWEVER executing them meaning loading your opponent and achieving throws takes the longest of all wrestling/grappling styles to learn or get the 'feel'. Until then you are muscling through everything and never really getting anywhere. Even freestyle wrestlers don't really 'get it' until they try Greco for a few months. Then one day, bang it all makes sense and you can springload anyone foolish enough to tie up with you.Judo, aikido, strongmen and get them all flying

Especially poor old aikido guys.
Now keep in mind by this stage against the average guy attacks are very easy to do, as he pushes back first time -whoosh he flies and lands not knowing what happened:D
The other advantage of Greco- head up as mentioned, body upright mostly, eyes on surroundings. Good habit for streetfighting. Also no attacks on legs means your centre of mass never gets below your opponent. as in a streetfight or riot you may be accidentally bumped or tripped or fall and you will never get up again. So I find Greco simple moves and good balance perfect style for this and moving forward in Greco is like moving forward or back in boxing, or how cops move forward in riot formation. Probably ancient battles too. Greco also has reputation for highest upper body strength however I think there is not much between freestyle, greco and judo guys. what Greco does have is the highest 'isometric' strength and endurance. That is the ability to maintain a load for a long time. That's what randy couture beat everyone in the day. He really didn't throw knockouts punches or even do any amazing Greco takedowns but he would force or even trick people into tieing people up on the ropes and then basically vampirise all their energy with his endurance.
On to Freestyle- For 1-1 grappling, well the high level freestyle guy takes us all down. He takes down Greco, BJJ, some very fast Judo guys are in with small chance to stay on their feet for a bit.( Of course all have a chance once on the ground as we know) However in pure takedowns freestyle is king.
The good news is its not too difficult to learn basic stay on your feet defences against a very skifull wrestler, as long as you learn the fundamentals and practice a lot. One proviso is competitive wrestlers are usually also as strong as weightlifters so if you are regular comic book or WOW playing guy you will need to work on your conditioning

However on a pound for pound basis freestyle wresting can be learned well enough to execute throws and provide good defence against all other grappling on the feet.
Add weapons I think a lot of bending and leg attacks in freestyle may go out the window. I also think ground grappling most attacks should be directed at controlling arms(another advantage of Greco) rather than anything else, another reason I think leg and choke submissions are maybe not seen in the old manuals?(too easy to get cut while trying to do it)
Add other people, riots, general melee I think the freestyle guy sticks to basic Greco techniques himself. Pushing, pulling a shield, blocking a hand, arm dragging, head control etc.
That said for the new sword martial arts learner of grappling I would still suggest freestyle over Greco because at least with freestyle you will learn ALL the takedown moves, and leg defences, and at those times when leg attacks are warranted you will be able to execute without thinking. It is only a small adjustment once you are proficient to concentrate on anything you want, upper body, worrying about knives and other opponents etc. And again this goes back to the importance of learning fundamentals before exceptions. Too much emphasis on exception based learning in my experience is for guys not too interested in actually committing to the realites that any combat is hard sweaty training- they are hoping for an easy shortcut to avoid it.
Lastly freestyle teaches good footspeed and timing. Unlike Greco it has visually based attacks( lunges to leg takedowns etc) and so must also teach reaction and maintaining necessary space to defend. As a leg cannot defend from an arm you need space to react to either block with arms or remove your own legs back.
Freestyle will thus hone your reflexes and balance on the feet and I was often told by our national sport fencers our lighter weight wrestlers make excellent fencing students just due to their lunging speed back and forth. That's not fat Greco heavyweights like me of course
