I live in LA and have been to games at the rose bowl and collisseum. I used to live in Utah and have been to many games at RES. From my experience I think your post is made up. There is so much more drinking at football games down here than at RES. I've had some run-ins with drunkards up there for sure, and I can see how someone who got an unlucky seat would have a terrible experience, but if you're being objective it's not really close. It also depends on where you sit. If your sits at the 50 around row 20 in the collisseum and then went and sat in the north end zone at RES, yeah probably a different experience. UCLA has undercover cops that police their stadium because the drinking gets so bad. This is common around most college football venues in the US. You still have 50% or so fans in RES that are mormon. the other 50% I think are pretty representative of the typical 100% of people that fill most other stadiums. 

I can't imagine someone who goes to games at the collisseum going to RES and seeing anything they don't see every week down here. Unless they got an unlucky seat. But walking the concourses and general atmosphere in the stadium, no way.