DotA2 has better character building, itemisation and combat than any RPG game
Compared to other genres, there's no reason to play RPGs unless you're after exploration, setting immersion, and writing.
I was playing Fallout 1.5: Resurrection and honestly the combat and character building are pretty dogshit as far as strategic or tactical complexity are concerned. They are good for immersion, rewarding acquisition of loot (which is part of exploration), but that's about it. Fallout is a storyfag game with a strong aesthetic, and even C&C is less about figuring out a complex puzzle of character building, it's just another tool for immersion aka storyfagging.
One of the most important parts of Fallout is the skeumorphic UI.