This doesn't make any sense when they don't need to spend more time to get better performance out of the PS4. The PS4 is supposed to be a bit easier to develop for, and they are running on pretty much the same architecture. If anything they are putting more time and money into getting the XB1 version to run at 1080p, while not putting in any effort to get more out of the PS4 version if there is true parity.PS4 isn't out-selling the Xbone by a significant enough margin to change this situation. Last gen we got gimped PS3 multiplats because the majority of sales were on 360, the PS3 ports simply weren't as important. At the start of this gen PS4 has been selling more at the outset, but the Xbone is still doing quite well and it's entirely possible that it could pull ahead in sales after a price drop. Parity makes sense at this point.
It is what it is.
I'm not quite ready to board the hate train on this, as we haven't seen the final products, and we don't know what each game looks like outside of resolution and target framerate. For all we know the PS4 version could have better AA, more AF, more active light sources, sharper shadows, better draw distances, better V-sync, and a locked 30fps with the XB1 version occasionally dipping below 30. There are plenty of things that could be graphically different while still keeping parity. Developers would constantly talk about how the X360 and PS3 versions of games had parity when the PS3 version would run a little worse, and look a little worse. That said, if this is like NFS:R where the two versions really do look and run identical, then you know that there is a whole lot of completely wasted power there, and they simply didn't even try to make the PS4 version look any better.