Since the reviewer mentioned it, the fact the characters all come from Buenos Aires is one of my favourite things about the movie. I've mentioned this a few times in conversation with people about the move, and they flat out didn't believe me. Their brains just didn't parse it, or what the implications are at all, because it's just there. It's never called out, or explained, or made a point.
There are two sequels and the first is really bad. None of the implied critique, just a straight cheesy SF action C-grade. The third film is actually worth a watch IMHO. It's still nowhere near the level of the original, but it's fun to see Van Dien kicking ass and taking names.