Yeah I've seen people comparing the two PC versions of the cards (everyone uses a downclocked 7870 since it's more realistic) and it pulls much better fps in games like Crysis 3 for example, it is quite a bit more powerful. I would also like to turn your attention to the fact the PS4 runs most it's games in a considerably higher resolution compared to the Xbone, When using a 27inch (1080p) gaming monitor, it's very noticeable.
At the end of the day, from my experience, the Xbox has the less than stellar specs, it's cooling system is a nice heat sink though, it's a bigger box and has less to cool.
I'm still not understanding why I would buy one over the PS4. I know your going to mention games but, nothing on the Xbox I see is "decent" yet either. Hell the only game I'm looking forward to on the consoles this entire year is Destiny (I've managed to bag myself a Ghost Edition) of which, the lead platform is the PS4.