I don't know what direction this thread is taking, but the decision between XB1 and PS4 isn't going to be an easy one. I think the XB1 definitely has some great qualities, especially for folks based in the states - it has twitch.tv integration while PS4 is forced to use ustream (screw that) - the XB1 has 12 months of free XBLG (rumored) while a PSN+ subscription is required for multiplayer on the PS4. Taking the PSN+ sub into account, that means over the course of a year that the PS4 will end up costing more.
It's something to consider. Anyway, i've always preferred XBLG heavily over PSN online+, and now with sony *requiring* the fee version for multiplayer (while the XB1 does not) it's not quite so straightforward.
So in short, I don't know. Some will say the PS4 is more technically advanced to which i'd agree, but 95% of games will be multiplatform anyway and designed for both systems equally. If that's the case, I may end up getting XB1 for twitch and the free year of XBLG and multiplayer. 
I dunno!
		
		
	 
They may indeed bundle free XBL to try to shore up the people not super happy about the price difference, but I've seen no indication so far that they will. Even if they do, it doesn't make a huge gap (unless the other rumors about them price-hiking XBL considerably are true). 
Multiplatform on x86/GCN will ensure that titles on both systems will look/play better on PS4 at least 95% of the time. It just means that there is a lot more GPU power (along with hugely faster memory) to crank up texture details, keep resolution 1080p, and have more effects/AA going. The whole advantage to both systems being on the same architechture now is brilliant, but it's going to make the XB1 look bad most of the time on multiplatform. 
The devs aren't going to just make their games look the same on both systems, because that would jeopardize their PS4 sales against other devs and first-party alternatives that ARE taking advantage of the power of the PS4. After all, it will be trivial to them to just move the sliders/settings upwards for PS4 versions. Being x86/GCN means that it will be easier now to make a game that takes maximum advantage of both the XB1/PS4 individually than just to make a single 360 or especially PS3 title today. 
Money talks, and when something is so easy, it will be the default action. Even in the worst-case ultra-lazy developer scenario where they do zero setting changes, the exact same settings will run much more smoothly on a PS4 compared to XB1, with less or no framerate drops during heavy action by comparison.