The below is definitely over-thinking it, but I think you are both under-thinking it (haters gonna hate) and over-thinking it (again who wins doesn't effect UConn one iota).
By baffled what I mean is I truly don't feel the same as fans that seem to enjoy losses by other teams as much as wins by their own. I comprehend it, but I don't enjoy rooting against teams or outcomes that fun or compelling. I'm not totally immune to rooting against teams and I find Dook's players arrogant therefore easy to root against, but I am not rooting against them to keep a mental scorecard on how their NCAA performance over the past 10yrs stacks up against UConn's. Anyway, importantly you did suggest teams to root FOR so happily I am not entirely befuddled
Sports radio and fan debate have seemingly created an ongoing list of teams and players that are the best of all-time or elite or whatever but I don't find this compelling. There is no Sagarin or Pomeroy rating of top college basketball teams of all-time and even if there were it would be a meaningless fiction.
For example lots of people around Boston wanted the Patriots to win the 2012 Super Bowl because theoretically Tom Brady would vault into the hypothetical conversation with Joe Montana as best QB of all-time. Similarly they really didn't want to lose to Eli Manning because that would mean he is a legitimate 'elite QB'. I truly do not understand why either would possibly matter to people. Brady seems to be doing OK regardless of accolades and even doesn't seem to care about indvidual accomplishments much (ie he is not Ted Williams with goal of wanting people to say "there goes the greatest hitter that ever lived") . Point is that if the person involved cares less about it then the fans due this illustrates that its a totally superficial argument.