They do not get better TV deals. UFC takes in about half a billion in TV/PPV gurantees from ESPN. DAZN was paying Matchroom and Golden Boy a bit north of $200 million combined in 2019. ESPN pays Top rank $90 million annually, Fox and Showtime pay another $60million for PBC.Boxing probably gets better tv deals and better sponsors. Specially better sponsors, as MMA fans are seen as trashy and no respectful brand wants to be associated with the sport (unfortunately) while boxing is seen as a classy sport and all the brands like to associate with it.
SPonsors are slightly better in boxing atm but not by much.
I've said it time and again, but the biggest difference in model between the UFC and boxing is athlete pay. Period. To argue it is anything else is ignorant or disingenuous given that boxing promoter are paying 2 to 3 times the wage share the UFC does. Sometimes closer to 4 times as much annually.