but they are alike
They were both meant to press the Alliance and Horde closer to war
Yes Garrosh definatly is just "whiny RAWR blah blah", do you just ignore Horde lore or something?
Go read Heart of War
it answers the questions as to why Garrosh despises the Alliance, and as to why he went from being best buddies with Thrall to becmoning irritated with his leadership