I'm not asking who'd win in a fight, but rather which do you think is the smarter creature. I was watching Jurassic Park just now, and the thought came to me.
Raptors can open doors and call for help; they can set traps and surround their prey in a very strategic manner.
Aliens have the ability to problem-solve and find new ways of reaching their prey. In this case, I want to use Kane's Son as a reference point since I think that's the smartest alien we've seen on screen.