Yes, I've just gone to the exercise of trying to correlate the MM creatures, and they're all over the place:
Mage: 9 HD, CR 6
Gladiator: 15 HD, CR 5
Knight: 8 HD, CR 3
etc...
Also, I realize that the XP budget table provided by Mearls in his July 7 2014 article, doesn't appear to be valid...