I mean I'm not sure how their UFC series sells nowadays (I personally loved #2, never tried succeeding ones) but I have to imagine it's not that Madden-level.
UFC, the MMA leader itself not the game, is arguably one of the most profitable live-event product / entertainment / sports around so there's that.
In relation, the exclusivity license deal between EA & Endeavor (UFC parent company) hangs in the balance if I'd take a guess.
Both companies are at a crossroads IMO & this new boxing game Undisputed as you said Mike is being closely monitored by then.
If things go south for them then UFC could decide to go with 2K for their next deal right while EA makes a new Fight Night.