That's very true, we have noticed that throughout the years. Every year when the game is at our Stadium we host a big tailgate and have about half the people there UofA fans. We give the UofA people passing a little ribbing, but it is always in good fun.
However, I don't think there has been a single time that we have gone to Tucson where we didn't get into it with them. The atmosphere is completely different. Not that all UofA fans are like that as I know a lot who are very gracious hosts, but still, it is not as friendly an environment as it is when we play at Sun Devil Stadium.