Rogue, hopefully her powers would keep her alive long enough, to grab Hawkgirl..... at that point, Rogue wins.
Rogue it's not even a contest.
Rogue wins, unless HG can knock her out early in the fight.
Rogue because they will end up fighting in the air, since Hawk Girl will not want to face Rogue on the ground. Rogue will fly behind her, grab her wings and slam Hawk Girl into the ground at a high rate of speed. Rogue takes Hawk Girl's mace, since she will not have any ore use for it and hopefully Rogue will use it on Gambit, repeatedly and at full strength.
Rogue since she could absorb her powers/knock her out.