PS4 renders at a native resolution of 1920x1080. Xbox One renders at a native resolution of 1600x900. PS4 Pro renders at a native resolution of 2560x1440 and downsamples this when outputting at 1080p. Xbox One X also renders natively at 2560x1440 even though it is currently not listed as Xbox One X Enhanced. The PS4 Pro appears to be using a form of post-process anti-aliasing and the other three consoles don't seem to have any anti-aliasing.
Stats.
https://docs.google.com/spreadsheet...-1ziCEzlqB4OsDIecbHxA1Op0/edit#gid=2019676557