UFC 103 is looking weak atm, but if the rumored fights end up happening 103 will definitely do good head to head with Mayweather Marquez. If it stays the same i'm probably going to be watching Mayweather.
btw those looking for the 103 rumored fights:
Cain Velasquez vs Shane Carwin for #1 Contender
Chuck Liddell vs Rich Franklin
Matt Hughes vs Mike Swick