Right, of course there are variables and your mileage will vary. For example, I like Revenge of the Mummy and want to ride it multiple times because it’s a relatively short, albeit thrilling experience. That said, I’m not willing to wait 60 to 90 minutes for it on a busy day and don’t know many people who would.
-and while yes, it’s absolutely possible to do everything one wants to do at least once without an Express Pass at Universal, said “everything” still amounts to far less experiences from a quantity perspective (again, imo). I for one will hit Hogwarts, Jurassic, Mummy, Pets and Transformers and be good with it. Using my knowledge of how to best move about the parks, being there at a decent time, etc. still amounts to just those experiences and just once through each before lines get bad.
Meanwhile at Disneyland, using the same set of skills and start times (and referencing one of my most recent one day park trips), I’m able to do Space, Buzz, Indy, Pirates, Mansion, Thunder, Falcon, Rise, Matterhorn, Roger, Toad, Pooh, Star Tours, Splash, Dumbo, Casey, Storybook, Teacups, Snow White and Tom Sawyers Island all in one go, without so much as even trying. Additionally, under normal circumstances, Disney opens their parks sooner and keeps them open later to allow Guests more time to get things done, while Universal tends to close sooner.
I mean, you’re right, if you wanted to do EVERYTHING at Disney, you’d need more than one day. But my point is that you’re still able to do more with a single day at Disney than with a day at Universal and with a better variety of attractions to choose from and more time to do ‘em. While over at Universal you’re going to start scraping the bottom of the barrel much sooner if your goal is to just “checkmark” everything. It won’t take long before you’re left with Minion Mayhem and the Super Silly Spinner.
It’s also worth noting that an inexperienced Guest probably wouldn’t even get everything done at Universal in a day too, when one considers that some of their attractions have specific show times and if they happen to find yourself in a 90 minute wait for the Mummy at the wrong time, they could miss ‘em. The Studio Tour will also eat a huge chunk of one’s day up too (both the line and the attraction), if one is unprepared.
Again, your mileage will vary. I love the attractions at Universal and definitely don’t have an issue forking over that kind of money when visiting their Orlando parks every few years. But I love the attractions at Disney too and there’s just more to do overall for me there and more time to do it, for less money, too.