I got 3 attacks I mainly use, normal swings, regular power attacks, and the critical charge, which is supposed to do double critical damage, and it does if I use a weaker weapon. With my current weapon a normal power attack hits for the exact same as critical charge, which does nearly twice as much damage when using an normal steel greatsword over what I do with a normal power attack. Elder dragons at level 62 take 3 power attacks to down, so that is a good foe to test whether or not berserker rage gets me any damage bonus. I found that my power attacks did the EXACT same damage against an elder dragon WITH berserker rage up, as it did with no berserker rage at all. And that my normal attacks did the same damage as a power attack with berserker rage up. There is apparently a cap on how much damage you can do to an enemy in a single hit, I found it but am unsure of the exact number, but my testing proves there is a cap, or I should have been able to 1hko that elder dragon with a critical charge power attack with berserker rage up. Hammers/War hammers also ignore 75% armor, which means they might be more effective for hitting max damage against armored foes, like dragons.
Anyone is free to test this but I am 100% certain there is a damage cap in skyrim.
I also tested 1000 Armor rating, compared to 1800 armor rating, and I noticed no difference in damage taken by giants. So that means armor also has a cap, and that it is rather pointless enchanting heavy armor bonus to equipment because it will get you nothing. Now if you want to do an unarmed damage character, it would be worth it if you perked the unarmed damage based on Armor, in which you can do about 350 damage with an unarmed attack with heavy armor bonus enchanted. In which case you wouldn't need to enchant weapon damage, and could free that up for something else.
Edited by Beriallord, 20 November 2011 - 08:54 PM.