It will be a one sided beating. That's why Arum picked Rios. After the fight you'll see threads on here proclaiming that Pacquiao is "back" because he easily beat a guy who he was supposed to easily beat.
I might be able to get past the main event if the card was better. Dib vs. Gradovich II Andy Ruiz vs. whoever + 2 six rounders Yeah, I'm good on that. Mosley vs. Mora PPV looks like it was boss in comparison.
That's because the outcome of the main event is almost certain and the undercard is complete garbage.
No, it isn't worth half as much, as the PPV numbers will show. Mayweather-Canelo was a much better fight on paper and Garcia-Matthysse was a far better matchup than anything on this card.