@Conekiller:
At that point it would boil down to how much you like the characters that are fighting against each other.
If everyone just ignored newer games that play identically to older previous ones (read: 90's and side scrolling brawlers) , every game would try to go out of its way to do something different. So instead of focusing on a formula that works developers would be so focused on doing something new every single time. I can see the possibility of more "well that didn't work out like they wanted" situations arising there. Not to mention much fewer games out in general. Sure it would force developers to be more creative, and we'd end up with some really interesting new mechanics, but there has to be some sort of "stick with what works".
At immediate glance, the Street Fighter and King of Fighters franchises are indistinguishable, but they stick around due to the few things they do differently from each other and the strength of the characters themselves.
Copying isn't really the problem for me, the problem is that this game bring nothing new to the table. From what I've seen features seem to have been deducted(tripping, zone death) or more mainstream features have been put in (meter, levels of super moves) , but there doesn't seem to be anything here that advances upon this style of fighting. Also they had a Wii in the development studio which is shameful.
I also understand they weren't the first to adopt this style of fighting from Smash bros., but at least games such as Cartoon Network: Punch Time Explosion XL and Shonen Jump All-stars had unique team attacks.