I don't understand why Ayu fans are so hurt because she didn't perform last. I don't see any problem with it even if Ayu is a legendary artist. Does she really need to be the last performer year after year anyway? Haven't she been the last one since the first a-nation anyway? And if she had an argument with avex that almost told her not to perform, you should just be happy she did. It would be sad if they didn't let her to do that (and I can't even imagine what a reaction that would have btw...).
I don't mean to sound offensive to anyone but I just don't get it, like, at all because Ayu will probably be the last performer on a-nation '12 again. At least I think so.