I heard that Ayu has never lip synch, is that true?

[CRAZYBOAT]

I came across a jpop forum and one poster mentioned that Ayu was the only artist who she has never seen lip synching. Is that true? Come to think of it, i've never seen Ayu lip synching from watching her countdown lives etc. I have a few of her live DVD concerts and i watched a few earlier and i couldn't find a song where she lip synch. So, i'm guessing this is a good fact to point out to other fans to make Ayu feel superior? So what do you think? Do you think she had lip synched?