Yo. : D
"He is claiming that no lame character is able to perform backflips, not that characters that can't do backflips are lame. He's not saying that Bowser is lame because he can't do backflips, he's saying Sheik can't do backflips because she is lame!"
Hmmm, I don't remember saying that characters were lame because of not being able to backflip...
Plus he DID say that all characters that can't backflip had something in common. So yeah when you see common, then he's just saying "all the chars that SUCK don't have backflips" which doesn't mean that others that suck would suck just BECAUSE of not having a backflip also, it was just something they HAD IN COMMON. Like it's just a group of things with the same thing, doesn't make it ANOTHER thing.
LOL so what I said just proves you right. (It was just showing you I understood what you meant)
But then really... After that, LOGICALLY, backflips doesn't even matter. It all comes down to preference.