Almost_A_Robot and b_b, I'm pretty sure the slower (acoustic) version Revolution 1 was the originally recorded version but they actually released Revolution (bad ass version) first as a single. I'm not sure what the thinking behind this was? Why not have both on the album? It's not as if they were overly picky about what made the album and what didn't, right?
John at this point is a pretty hard dude to deal with from a managerial standpoint (not that he was ever easy) and I'm guessing it was by his design. Not sure really though. If you've got more, I'd be glad to learn about it.
I blame Yoko.