The 501rst are the best troops in the Imperial Army. The 501rst soldiers in this match are equipped to kill Predators. So I think they can beat the Predator in question. There is 20 of them. So they are bigger team then Special Forces team from Predator and they have more advanced weapons and equipment. They have sensors that let them detect the general location of the Predator. Meaning that cal spam the area with blaster fire, I doubt the Predator can doge all of that.