This was bound to happen. At EVO 2012, a Smash Bros fan asked why Playstation All-Stars Battle Royale is a rip-off (after admitting to playing only 10 minutes of it).
Director Omar Kendall responded:
PlayStation All Stars is it’s own game. I understand that Smash players -some Smash players, not all Smash players do this- will sort of base how successful PlayStation All Stars as a game is on how accurately it recreates the Smash Brother’s experience.
Our goal is to create a unique combat experience for PlayStation All Stars that we fully admit borrows from many different kinds of games including Smash, but our goal is not solely replicate the Smash Brother’s experience.
I think based on ten minutes… maybe if you played it ten more minutes you’d have a different appreciation for the game. I just really would ask that players like you, approach it with an open mind.
Handled like a boss then?
Source: The Silent Chief