I asked this same question to the guy at EB Games.
He reiterated a lot of what you guys wrote above.
He also said that since PS4 took out the Eye, the camera will not be particularly deeply ingrained within PS4 games and applications. Conversely, since the Kinect comes standard, developers will be much more inclined to maximize it's use.
Also, if you're not US based, a few of the Xbox One's entertainment features do not apply to you (Hulu for instance).
I'm not a hardcore gamer, so I was leaning Xbox One since it's more entertainment based and I mostly play 3rd party titles - NBA 2k, NBA Live, FIFA, Hitman, GTA etc...