OK, I was just about to post here about how confusing the bonus system is, when the XML calls it something totally different than what the map says.
Then I read a bit of the thread, and now I get that the XML is just poorly made. When my first turn started, I was all "WTF is a radiation nexus? WTF is irradiated territory? Why are these not explained in the map?"
Go ahead and call me stupid, but to me this was extremely confusing. I do get most maps instantly though, and it seems I'm not the only one who has been confused by the XML in this map.
IMO it should be fixed. Like benjikat said, use the <required> and <overrides> tags of the XML.
I just ranted about the bonuses in the game chat, and now everyone else in the game probably thinks I'm dumb or something.
I just don't want that happening to anyone else