Regarding the bolded...isn't that appliable to like every other game in existence
It's a reason why people don't tackle the theme GTA goes for; those games underperform. Sleeping Dogs did exceptionally well but not on the same caliber as GTA. Crackdown, Sunset Overdrive, Red Faction: Guerilla, Saints Row--these are all games that follow the same formulaic gameplay approach while doing it's own unique thing. Not calling them comparable is laughable really.
It's not as if Rockstar is a GTA machine. Bully, Midnight Club, Max Payne, Agent (whenever that comes out), L.A. Noire, Manhunt, Red Dead Redemption--all made by Rockstar, and all universally /good/ titles. Calling R* 'overrated' is kind of a shytty dismissal.
R* are the guys that made an excellent Ping Pong game. They live up to their hype.