well i dont know about all xbone games i dont follow it as much.
but nearly allllllll ps4 games are developed on the pc. and ported to a default medium settings to meet the hardware of the ps4.
i think the ps4 has the power for slightly better, but there is a hell of a lot reserved resources for the OS and social stuff to run. cant opt out of it for devs.
ps4 may be the best console that has ever existed for graphics. but its still 5 steps behind current pcs today.
not to mention already inferior viewing screens of televisions. its like a double whammy of lame lol.