Round 1: Fistfight. (No other powers besides strength, speed, durability, etc.) Battle takes place in the Palace Station casino parking lot in Las Vegas, starting 10' apart. Win by death or KO. In character.
Round 2: Battle of seduction. They're working on opposite sides of a complex spying/intelligence operation, where two teams are trying to get information from each other. They are both tasked by their team to seduce the other one, thereby gaining important secrets that will let their team win. Neither knows the other is trying to seduce him/her. Which one manages to ensorcell/psionically control the other one? They meet at the Lavo club in Las Vegas. In character.
Who wins each round and why? Keep it clean, kids! :)