changes/differences in the songs on A COMPLETE?

[Rebirthia]

even if you hear them wit earphones you feel the difference, in almost every single song... it might me some arrangements elonged in time in the last bridge, but they are there...

btw, am I the only onw who thinks MIRRORCLE WORLD version in A COMPLETE is annoying in a sense... it goes just a little bit faster, and it outs me on edge, it's uncomfortable, now that i think about it, have to change them in my iPod nano.... and the voice has been edited in a different way also, and i'm used to the other one, so now way....