He is. I hope by the time the game is released the WiIU will have enough homebrew options to replace the soundtrack with construction noises instead. Would certainly be an improvement.
The entire soundtrack? Seriously? That's pretty disappointing, I liked how Xenoblade had all sorts of different composers working on it.
The only Sawano soundtrack I've heard is Kill la Kill's. I actually liked a few of the songs, but I don't really think he can match Xenoblade's OST. At least the rest of this game is looking great.