I don't know. There's quite a bit of strategy involved in building up a meter to unleash different levels of attack.
I'm willing to give the game a chance because I like Sony's characters and I like Smash Bros. However, I would have preferred Sony not play it so close to Smash Bros. which already has a few copy cats. What Sony should have done is create a game very different from Smash Bros. to not only justify its existence but give it greater appeal. I have Smash Bros., do I really need another game like it? I'll stick with the original. And if Sony insisted on basing Playstation All-Stars Battle Royale on another videogame, using Power Stone, rather than Smash Bros., as the basis would have made the game stand out more. Capcom hasn't released a brand new game in the series since Power Stone 2 in 2000. There aren't a lot of games like it.
On a side note, a commenter on Kotaku suggested that the final boss be a Giant Enemy Crab and should Sony/Superbot Entertainment comply, I'd be far more interested in this game.