Yeah, they should have these runs played by someone who knows what they are doing. That looked like I do on a controller (pretty bad). Plus the Predator's melee seemed really weak. But hopefully there is a good polish and balance pass.
Watch the movie again, he was nowhere near the predator's strength, and had only decent firepower. It was all about thinking outside the box and getting an ambush. Head to head Dutch would die every time. (IMHO of course).
Still, great movie, watch it every couple of years and have visited the helo crash from the movie.