Everywhere else says 30fps for both.
That means either Xbox One will run more choppy, the PS4 version will look much much more pretty, or they scale down the graphics on both to make Microsoft happy.
I fear its most likely the latter, I just hope it doesn't become a "thing" to scale down PS4 games so they can have platform parity on performance. Its bad enough some developers are doing this on PC already so it doesn't outclass the console versions as much as it should.