While UOR’s Citywalk wins aesthetically (you can’t beat the vista over the water with the water taxis running in front of Toothsome and Hard Rock), content-wise USH wins by a near landslide. Between their multitude of unique TS options, tons of QS and shops, and it still holds its own on entertainment options. Plus, now that USH is getting some of UOR’s best dining concepts, it makes it even better.
UOR’s Citywalk has become a little bloated with (admittedly great) Table Service concepts, and I really hope that the Studio Store replacement doesn’t continue that trend.
According to some of my SoCal friends, USH Citywalk is a little more of a locals hangout ala Disney Springs, in the same way that Disneyland’s Downtown Disney mirrors UOR’s Citywalk as a prelude to/after visiting the parks.