He has a bigger following in terms of raw numbers, sure, and his potential fanbase is enormous. But he hasn't done himself any favors the last couple years. And there are a lot of Mexicans and Mexican-Americans who don't respect him, or think he's been carried by Televisa coming up, and protected by Golden Boy since he's been in the US.
This fight also isn't going to help. I grew up with a couple of Mexican-American dudes from my neighborhood, both follow boxing, both are pretty grossed out by tonight.