That is a jarring difference between the two consoles.
I guess multiplats are going to be developed for the lowest common denominator so they will run equally well on both systems with a chance of PS4 running them better?
Another story for the exclusives.
resolution and assets are fairly easy to scale so if it was that huge a gulf it would be trivial for a developer to make one look better,
you would see one held back in computational tasks like physics that could alter main code and cause testing and other development differences tho.
If this is true we will see resolution differences out the gate, if its not true we will not and there will be a visual parity.
The quote they use does shed some other light to the situation.
"a platform-agnostic development build"
ie we run the same stuff on both, given the PS4 seems a stock CPU and GPU (the compute stuff is unlikely to be used atm) then yes the developer is confirming neither company have lied with their high level specs and we are seeing expected results. They are saying there is no special sauce, this is not news.
What it does not cover is what happens one these builds go through massage to use each consoles specific strengths. What happens once the dedicated hardware in the Xbox is put to use, what happens when the developer actually things about their render pipeline and starts to use the ESRAM etc. Likewise when developers start to experiment with the more abundant GPU on the PS4 for extra GPGPU.
At the moment developers are having a hard time, they have had poor drivers, non final spec's and they are targeting more consoles than every as they also often have 360 and PS3 ports on the go also.
yes it would appear the Xbox takes slightly more work than porting a PC build to it but as the console game is all about refinement and optimization this is not a bad thing as developers will be doing this anyway.