“Better” is a bad word to use. I mean, Undisputed 3 would be terrible by today’s standards just based on its graphics and visual presentation.
The best way to put it, is that EA UFC 3 has gaping holes in areas that UD3 already did right. And these are essential elements of an MMA game that should never have been eliminated in the first place.
I’m talking quintessential aspects of MMA grappling like a fully functional cage wrestling system, the ability to transition into a body triangle, knees from back side, TDs directly into back side, head movement on the ground, etc.