Requiem gave us Wolf, a pretty damn cool predator concept. Could the fight storyboarding have been better (more situational awareness by Wolf, less flailing/waddling by the aliens)? Yes, but I feel the Strause bros didn't try to f**k with the predator/aliens formula too much, despite budgetary pressure.
The Predator gave us the cringe-inducing Iron Predator, and had characters and situations even sillier than Requiem (this is hard). The scene where the two guys shoot each other, yeah...