Fight takes place in LA, the city is empty. The team killed Lois Lane before the fight and superman can't bring her back. So he's bloodlusted. Who wins.
flagged, the phoenix would travel back in time and keep superman from being born.
Movie characters. Superman has a chance, as he displayed more abilities in Superman Returns than Phoenix did in X-Men 3. I mean Wolverine killed her with his claws, (though she let him), if Superman could hit her with any kind of strike at all, she would be dead.
Still think Superman loses, since he didn't really fight anyone that powerful in his movie to display is durability. Just saying by movie versions alone you cannot assume Phoenix is that powerful.