Yes, of course, but Rebellion still defined the rules for the AI. It's not like it is a self-learning AI. If it is, that'd put AvP as the most advanced game out there, but I highly doubt it.
Nevertheless, it would still be great to have predators in the mix as well, no matter if they stood on a distance or moved up close. Just throw in a few at a time, starting with 1 and increasing by 1 for each 3rd alien wave or something..