The problem I have with this guide is that it doesn't make any mention about how experience works in D2R. That might not be necessary in a general guide, but this particular guide is about how to level fast, and claims to be the fastest , not how to finish the game quickly.
This is from the Arreat Summit, and I don't have any reason to think that it's changed in D2R. (I'm not sure if I'm allowed to post links so I'll refrain, I can provide one on request):
Every map has a level associated with it that all normal monsters on that map inherit. For the Blood Moor in Hell, that level
