Toughest Decision of my life is a complete overstatement. The humans are boring and a simple minded species therefore their story is boring and simple-minded. The asura not only have the best story (IMO) They have the best Female voice actor (IMO). There lore is very interesting and their snarky and their prideful Statements make it all the better.
So It is obvious that asura rule and the humans DONT. (Besides one of these days The asura will take over and rule tyria while the humans are just struggling to survive.