Yep, this is it. As good as Fight Night Champion was, it apparently didn't sell that well. With them having to live se.each individual fighter, it starts getting prohibitively expensive to fill out a roster.
I'm excited for Undisputed, but I think people are about to be unpleasantly surprised by how many fighters are probably going to end up as DLC. Way easier to pay out fighters essentially based on transactions, instead of a flat fee up front.
UFC is easier to work with, since UFC contracts include signing over rights your likeness for forms of media like video games, so all EA has to do is negotiate with UFC, and call it a day.