We just returned from six nights in Orlando, spending 3 days at UOR and 2 days at WDW. Park-for-park, ride-for-ride, UOR holds up very well next to WDW. WDW had better Christmas activities although, to be fair, UOR doesn't officially start its major Christmas activities until December 1.
UOR and WDW cleanliness, friendliness of CMs, and condition were comparable, ignoring Splash Mountain, which was simply depressing to ride.
UOR's best attractions are all less than 15 years old with more coming online soon. WDW's best attractions are several decades old. (My family's opinion of NFL was that it was a solid addition but that there's nothing there that's worth repeating. WWOHP leaves NFL in its dust.) WDW is still better because it has so much more to offer but UOR is catching up.