Always layers of complexity, centered around assessments of course. Nonetheless, not as clean and easy as it appears at initial glance.
Its the last day of the season, your team and mine are both tied for the worst record in the NBA, and Tim Duncan is waiting to be drafted #1. My team loses, and then I turn on the TV to watch yours. I want your team to WIN, because that's a BAD thing for your team and a good thing for mine. Meanwhile, if you are rooting for your team to win, you are also perhaps unwittingly rooting for bad thing to happen to them.
It confuses rooting interests and makes things hard, but who is the bigger fan, the guy who puts his head down and wants them to win everry possible game now, damn the consequences or future, or the guy taking the longer term view wanting them to win more games in the future and willing to absorb short term losses for long term gains? Not sure either one is the "bigger fan". Different, and confusingly so however, especially when it starts to mix in distate for current team members etc.