Aleol said:
Swords, Swords and swords. Nobody seems to understand how longswords work; even though they clearly have two sharp edges and a pointy end, most people think their heavy club-like metal sticks. Seriously? Also, katanas are seriously overrated. They're no better than any other sword
Also armor. Why does armor seem to be made of paper and heavy as a steel beam in movies and videogames? A guy in a full plate harness is not going to go down easily at all, and yet most depictions of it have blades going straight through it. Even stabbing through plate was difficult. and there are other armors too that are given the shaft. I don't mind it in games so much (unless it's a goddamn cutscene), as it's mostly just visual aesthetic, but movies have no excuse. Also, their maille must be really bad quality, because apparently swords can cut through those as well (they can't) maybe a hard stab, but not a cut.
http://tvtropes.org/pmwiki/pmwiki.php/Main/ArmorIsUseless
Katana's were pretty crappy swords really. I mean I think they WERE sharp, but the edge dulled pretty fast if it was used pretty well, and it was fairly brittle to be using against metal armor or to be striking against other weapons. As I understand it it was largely a symbolic weapon, used as a status symbol, in duels and against unarmored peasants. The samurai's real combat weapons were spears, other pole arms and bows. (Pretty sure most of this is incorrect but I'm not sure if all of it is.)
I believe western swords, or really any blade could cut through armor.... eventually, and given enough force but it would largely wreak havoc on the edge( dulling the every loving SHIT out of it) and probably damaging the structural integrity of the entire weapon... unless they were specifically designed to counter armor. As said stabs would be much more likely to work as most were generally designed to foil slashes rather then trusts.
Typically you looked for gaps in the armor (joints typically as you have to be able to move), used a blunt weapon which could possibly do even MORE damage on someone wearing armor than someone who is not (crushing through plate to the point the owners
own armor is stabbing them into something vital or crushed in so heavily that they suffocate), or use arrows which have all that inertia to help them penetrate the armor.