I can't be objective on Kamiya's claims, as to me the man is a god. I mean, he made Okami, possibly my favorite single game ever, plus Resident Evil 2, Devil May Cry, Viewtiful Joe, Bayonetta... just too many of my favorite games. He could defend Michael Pachter and I wouldn't be mad at him.
That said, I'm all for more Smash Bros clones. In fact, they're long overdue. Companies didn't take so long to clone Street Fighter 2, and while many of those clones have been deservedly relegated to obscurity, I think it's obvious many others are still remembered fondly, and some even gave back to the genre, inspiring stuff that would be reabsorbed into Street Fighter itself (case in point: Super bars).
The only thing is, this particular Smash Bros clone doesn't appeal to me at all. The characters aren't nearly as charismatic, and the whole thing clashes so jarringly against itself (too many different styles/degrees of realism, as opposed to Smash's distinctive, unifying style). To me it's just as jarring as that Takara DreamMix TV World Fighters game.
The thing is, at this point, I'm not sure if it's so easy to make a Smash Bros clone without Nintendo characters. One I found quite successful, not to mention quite original with a few of its mechanics, was Jump Super/Ultimate Stars (again, because it had an attractive, unified style).