It's crazy. Many, not some, many fans can't be happy with a win. How many times have we read, "Listen, I know they won, but..." They rationalize the complaining with statements of concern for future games, basing it on luck running out etc.
There have been so many wins over the past few years that many B's fans are looking for style points, and are also sitting on their I-Told-You-So thrones when the B's lose a few games in a row.
(I complain about Thornton, but it's not for winning or losing. It's because I have no respect for him as a hockey player, and I hate when I'm watching or at a game and he or one of his texting buddies interrupts the game for a staged fight.)