Arizona has 9 wins as an unranked team over a top 10 team in the last 20 years.
The fact that they're rarely ranked indicates they shouldn't be good enough to regularly beat top 10 teams. If they're doing so, it means the top 10 teams they beat shouldn't be ranked as they are.
More confirmation of what we always knew. The Pac was consistently propped up by biased voting that favored royalty programs like SC and UO.