Never heard of those games. It's like EWR is for Pro Wrestling but even better. You can control any MMA company in the world and you sign/release fighters and book the cards. You can make whatever divisions you like. You can takeover companies and even have feeder leagues where you send/call up talent.
They have even produced a Dawn of MMA scenario where you start in 1993 and the fighters debut when they really did. I'm up to 2001. My champs are-
Heavyweight- Josh Barnett
Light Heavyweight- Bas Rutten
Middleweight- Dan Henderson
Welterweight- Carlos Newton
Lightweight- Javier Vasquez
Fedor Emelianenko, Matt Hughes and Anderson Silva are my up and coming undefeated rookies.