My friend Kalun did a few perfect cuts with the Windlass 15th century longsword. I examined the edge of the shamshir and the 15th century longsword. They showed some wear and tear from cutting water-filled plastic bottles in noticible rate. According to previous experience, that would rank their metallurgy about the same with some Chinese made low-end to middle-end swords. One thing to note is that the Tinker sword survived many more bottles and showed almost no sign of dulling, while the spadona survived about 1/2 of the amount the tinker did, and showed a little sign of dulling. Given than the spadona has a thinner geometry than every other sword, I would say that both Tinker and Albion are outmatching these windlass swords in metallurgy.
http://www.youtube.com/watch?v=fCQ-NciiIBo