You guys are looking at the movie from the end backwards. The reason the predator comes to earth is to hunt deadly foe. Dutch had to outsmart the Predator ( a little luck a little smarts).
Im completely fine with a predator hunting an Indian hunter one on one using the land. A predator coming down with Plasma casters and smart discs to defeat Indians isnt going to work.
There has to be a sport element to it. That's the whole point of the Predators coming.