It's not that WoW is easy. If you want it to be easy, then it is. If you want otherwise, well... You'll have it! The point is that WoW can be as hard as you want it... If you stick to tanking normal dungeons as a dk, it's definitely piece of cake, it doesn't demand anything from you, really... Now, if you want challenge, apply to a decent guild, go do heroic raids or just fight your way to the high ratings of arena/ratedbg... Questing is easier, I admit, but WoW is focused on endgame,and while you can't really judge Rift endgame, because it's simply nonexistent at the moment - hold on for a moment with any statements:P it's only the beginning