I think the pictures from the iPhone are so much better than the One. I understand that the one is closer to reality but as I only have those pictures to go by I find the warmer tone of the iPhone's pictures much more pleasing on the eye.
I'm no expert on camera's but I am not impressed with my new phones camera at all, it'll do for snapping the odd picture to be uploaded to facebook or twitter but that's about it. Put up against even my partners 5mp ipod 5G camera it fails miserably and is very difficult to just pull out and snap a decent shot like it was on the One X.. I only hope this doesn't detract from what is otherwise an amazing phone.