I hope I'm wrong, but I'm guessing Smash will be funner overall. Sure the online in this is better already just by playing the beta. However, couch play nothing beats Smash for me. It works as both a party and a fighting game. This, I'm getting a fighting-only vibe thus far.
Treachery is the inevitable result of all affairs.
It really depends. Better is an opinion to most. Mainly because although this game doesn't use health, it uses attacks you'd more traditionally see in fighting games, just put into a 4-player environment. When Smash Bros has attacks that are pretty different from anything I've seen. They just have different feels. I think the characters in All-Stars have more depth, which for me is better than a lot with less.
Crash most wanted for PSASBR Booster Gold most wanted for Injustice: Gods Among Us
Nope, because personally I enjoy Brawl's battle system better then PSASBR's. Not that PSASBR has a bad system but I just like Brawl's better since it's more exciting and fun.
Also the roster for PSASBR isn't as good as SSBB's. I played as every character on Brawl except Jigglypuff, while on PSASBR I see myself not playing as 4 characters out of 20. Dino, Nariko, Fat Princess, and Kratos (though most like Kratos so he's okay community-wise). If you don't believe me, on the PSASBR beta I didn't even THINK to play as Fat Princess.
So yeah that's my 5 cents. PSASBR looks like it's gonna be good but I just don't think it'll be better then Brawl.