Is Warrior viable for end game contents?

[Coramac]

And you're completely ignoring the fact that WAR gets a 15% increase to all healing received. At 200 DPS, a WAR only requires 173.9 HPS (that is, HPS that anyone else would require). At 800 DPS, a WAR would require 695.7. Yes, it's still more than what a PAL requires, but it's not where near as large as you make it out to be.

You are forgetting that the 15% healing requires Wrath stacks. Using Inner Beast eliminates the healing bonus. Based on rotations posted, the average value of the bonus healing is going to be around 8%.