They have consistently been a better program over the last 25-30 years, but Arizona is not as good of a job as UCLA. UCLA is exactly what Alabama football was before Nick Saban got there.
I think there's some big differences.
Conference prestige: SEC football vs. PAC-12 basketball.
Fan passion: College football is life in Alabama, LA has the Lakers plus all kinds of non-sports distractions
Academics: UCLA is a top-20 USNWR school and it's academic leadership isn't going to cut athletics many breaks
Athletic department: UCLA is clearly committed to non-revenue sports and seems less likely to let the football and basketball coaches have the biggest say
I think there's some real uncertainty about the PAC-12 football and basketball programs, especially the UC schools like UCLA and Cal that I think would make potential coaches hesitant.