The Heaviest Armored Warrior in the Bronze Era was the Spartan. The Heaviest Armored Warrior of the Medieval Times was The Knight. What Limitations do each armor have, what armor/weapons are superior?
It might not be what you're looking for, but "Skallagrim" on youtube has a pretty decent knowledge of the hand-to-hand combat, and if you watch a few of his videos, you could probably get a good idea as to if the swords were used differently, or in general if they used other things in their place. Here and Here are a couple of links to start you off.