De La Hoya - Forbes Weigh-in Time Difference - Advantage Oscar?

Uatu usually watches the weigh-ins live on hbo.com on the Friday before a big fight. Most of the fights are out of Vegas and go off at 5:30pm over here on the East Coast. Imagine Uatu's surprise when he went to Hbo.com and saw that today's weigh in is actually at 3:30 over here on the east coast. Is the extra two hour difference for Oscar to have more time to rehyrdate? Does the two hours even make a difference? An honest explanation could be because the fight is in LA and not Vegas. Just wondering aloud.