I was really disapointed with the revelation, I was specting a fun fighting game with an all-stars mascots, but with something very new and different, maybe like Power Stone, or something original, but it is just too similar to SSB to not be at least down.
I think is clearly a copy, but it does not mean is a bad copy, if the rooster is strong enough and they can sucessfully blend all the different art styles and if the gameplay mechanics offer something new, it can be an enjoyable and different enough.
Now from what they showed it seems the graphical part is not shaping out good enough, the rooster seems solid, and the mechanics sound average on paper, and I have found opinions that say is good and others that say is bad, so right now it seems more like Teenage Mutant Ninja Turtles Smash that SSBB. Let's give them time.