The best way to settle this debate is when/if they get in the ring. Up until they fought, Tito had a better resume than B-Hop. But since we are talking about resumes, you have to consider the total body of work and in that case, only one of these two has three losses and two of them by knockout. I am far from being a Pac-hater.
Mayweather winning their head to head match up doesn't automatically give him a better resume than Pac. As you said, look at their total body of work and Pac is already far away as compared to Floyd when you look at their body of work. It's not like Floyd is just one win away from catching Pac's resume. Ken Norton and Leon Spinks winning against Ali did not give them a better resume than Ali.
Pacquiao, not that there's anything wrong with Mayweather's though- no matter how little credit I give for that Marquez fight.