I notice that many works of fantasy it just seems they use the elements of swords and armor wrong. Don't try to cut through armor with a sword, that's a good way to dull or even break your sword. Swords were actually used to cut the joints or any part left unprotected, hammers, axes and flails are more likely to break armor than swords or spears can. It just seems like in fantasy, armor seems very weak and something easily broken.