In a nutshell: the Doomsday maps are slightly less aggressive in the area(s) that would potentially cause a tuner code to be thrown. And thus.. the nonDoomsday maps are slightly more aggressive in those area(s). That being said, a few people tried to trip the code by running nonDoomsday maps, but couldn't trip it!
If you don't care about throwing the code, run nonDoomsday.
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