If Capcom can make a fucking SERVBOT into a viable character, there shouldn't be any problem with Phoenix Wright.
Yes, I know it seems... unfitting to include Arthur and Firebrand, but when you think about it, they didn't do much in Ghosts N' Goblins. Arthur's only method of attack in that game was to throw weapons at enemies. He didn't have anything else.
As for Firebrand... need I say more? All he ever did in Ghosts N' Goblins was a swoop attack. Granted, it was annoying as hell, but I don't recall him doing anything else.
Yes but Phoenix Wright doesn't fit well into this game as a fighter. This is why the Phoenix Wright fans have to be blamed on for allowing him to be in Ultimate Marvel vs Capcom 3. When can you get it through that thick skull of yours?
Why is Phoenix in this? Not saying having Ace Attorney characters in the game WON'T make it bad, but wouldn't Fransika VonKarma make a better characters, she would whip anyone who gets in her way? You really think Nick can stand up to Galactus? No.
If feel like a Ace Attorney character might be a "fun" character to play, like Fransika because of her whip, but Phoenix? Why? Because he launched the franchise? The star of a game series that's under 10 years old gets to be in this game of Capcom All Stars vs. Marvel's.... while Megaman a, CAPCOM's poster-boys since the 8-bit days, are no where to be seen.