It didn't have much of a point, just as Fugitive pursuing humans. Lazy writing, just a way to show how badass the upgrade is. My initial thoughts, and mostly I stand by them.
But there might be another thing. Humans already had the controller thingy. Upgrade was already there for him, there was no way (supposedly) he got away from that situation. So he just bought time.
I think this predator on predator thing is just too much, it doesn't bring out how really bad and brutal the character is. In its nature, towards unknown species..anyhow, just like the new movie, the whole concept (as the backbone of the ideas) is not inspiring. But I guess it's the way this works now.