i don't think its Tetsuya Yukumi that's the problem, since he's only composing. it's the arrangement.
case in point KAT-TUN's "Real Face":
- [Single Version] was arranged by CHOKKAKU
- [Best of KAT-TUN Version] was arranged by Matsumoto Tak (B'z)
they are both completely different, if you've listened to it.
