I think peoples expectation have "adjust" a lot since next gen launched, which is why people are happy with 900p now. This could be the future trend with the new SDK, 900p on xbox, 1080p on PS4. Who knows.
Fun recall, Incidentally, 1080p is 30% more pixels than 900p, which is almost equivalent to 30% more performance. Remember MS flush off PS4 being 30% more powerful? Now most people are more than happy to accept the 30% parity. Not trying to rub off people, but I do find it irony & funny.
I do think visually, its not too much difference.