Unitarianism is a mixed bag of all religions (talk about hedging their bets!), they've even got Jesus in there somewhere, but they water him down by tossing other religions into the mix.
It's like buying a boxed set of Elvis records and finding he's been watered down by having a bunch of lesser artists in there with him, you'd be justifiably annoyed because Elvis alone was KING, just as Jesus was KING, and you don't want him lumped in with other stuff..

Right Elv?
"Uh-huh"..
Incidentally there are Unitarian churches around and I often wonder if they pray like this- "Our Father in heaven and anybody else out there, hallowed be thy names..."
WIKI- Unitarian adherents generally accept religious pluralism and find value in all teachings
http://en.wikipedia.org/wiki/Unitarianism