Universal to me is a situation that's much more clear-cut: Orlando's is better. Universal Hollywood is a bit limited and overpriced by comparison. Unlike the Disney parks, I find it more difficult to recommend USH to those accustomed to Orlando because there's a fair number of exact clones, and the Disney and Universal parks are a fair distance away from each other in CA. And as much as the Studio Tour is iconic, it's not the only studio tour option available-and frankly, if people just want to tour a movie studio without the theatrics and attraction components, they might be better served by one of the other, cheaper options (WB, Sony, Paramount), many of which also offer a longer tour time than Universal does. Arguably, the urge to do both Disney and Universal in the same trip is a byproduct of WDW-centric thinking, where the combination makes a lot more sense and the two destinations are much more comparable.
BUT I also love the atmosphere of USH, Waterworld, and the Studio Tour. The atmosphere of Universal Hollywood probably shouldn't work, but somehow it does-better than the Studio park in Florida, actually, at least as of now. And Super Nintendo World, for a few years at least, will give USH a unique draw that will temporarily help set it apart from the Florida parks.
And we all know, deep down, that Universal Orlando has a secret, crippling flaw: it just doesn't have enough escalators. The moving walkways are merely a poor man's substitute for the true brilliance of the Starway!