Meh. It was a decent show, but definitely ran longer than it should have.
And frankly, it's hard to defend the fact that they ran it for so long with no updates when in Tokyo, they were running this show...and this one has subsequently been replaced!
In terms of the Disney v. Universal discussion, I think that if all of Universal's work as of late was on par with the Harry Potter stuff, they'd be winning the "theme park wars", but frankly most of what they've done since Diagon have been lazy screen attractions. Disney's attractions, on average, have been more successful, if not perfect, since the last Potter expansion.
Which lineup you like better is subjective, but Disney has a more balanced collection of attractions. One of the problems of Universal is that everything is so FULL THROTTLE!!!11!1 that there's not really anything relaxing or ambient, whereas Disney has a better balance of thrill vs. non thrill attractions, and the balance will remain better even if Disney rushes in a bunch of thrill rides tomorrow. I get that Universal's staked their brand on constant adrenaline rushes and sensory overload, but there should be something to relax and catch your breath on besides seeing a show or riding ET.