Here's the thing. Bayonetta is kinda a Devil May Cry rip off. Not that that's bad, but literally every reviewer showered it with praise for being Devil May Cry.
So what's the difference here? Yeah, it plays like SSB but it's not exactly the same. Combat is different, scoring is different, it just shares the concept of being a mash-up and a similar level layout. If anything they've been respectful to being acknowledged as SSB like. Here's one of their statements:
"I can’t blame people for using it. I totally understand where the comparisons come from. We’re fans of the brawler genre and fighting games at large. We understand that we’re taking some of the best things that have come before us and also adding something new to it. Our new core gameplay mechanic and the super system we feel are pretty original and offer something new to sort of the great tradition to brawlers and fighting games at large.
Show me the original game at E3 this year that borrows no elements from no game that has come before it."
It's a nice statement. They like the genre, they know they're similar, but it's also their own creation. He's not Gameloft. He's not Zynga. He's taking an idea and making it his own. It's called "inspiration".
The same thing is with Bayonetta. It's definitely inspired by DMC and everyone says it's almost a DMC in its own right. But since we've got a Sony brand name on this, it's instantly a shameless rip off made by scumbags who should burn in the deepest depths of hell.
I can see not taking interest in the game if maybe the characters don't appeal to you or you don't like the genre, but actively going out of your way to hate on it? That's shallow.
I don't think it'll be better than SSB, not at all, but I think it'll be a fun game and its about time we saw a crossover game for Sony franchises, and we got one that looks both appropriate and fun. But of course everyone needs to rain piss on the parade because they have nothing better to do.