This is a tangent, I know...
One of the common misconceptions of western swordcraft is that the swords were heavy and unwieldly. True, there were some styles of sword that grew to around two meters in length, but these were specialized weapons and were usually choked up (grab the leather wrapped lower portion of the blade) after chopping off the head of pikes. For the majority of the European sword era swords were quite reasonable in weight. This would make sense from a Darwinian point of view, as iron ore is awfully similar in Japan and Germany; laws of physics seem to be pretty similar, too. A sword has to be a certain lightness in order to be agile enough to use.
The biggest difference is the shape of the blade, and even that is somewhat in question, as there were curved blades, though of different proportions, in Europe as well.
We are talking swords ranging from 2lbs 12oz to 3lbs, generally, for European blades, though claymore designs did run heavier, pushing 5 lbs.
Check here for some replicas of European swords:
http://66.0.193.114/cgi-bin/www11651.storefront
Jonathan