Depends what you mean by value.... There is hardly ANY attraction over at Universal that is in critically horrible shape except for maybe E.T.... Meanwhile at Disney World, you have SOOO many useless, outdated, abandoned, and bad attractions over the property: Stitch's Great Escape, Tomorrowland Speedway, Ellen's Energy Adventure, Journey Into Imagination with Figment, The Seas with Nemo & Friends, Wonders of Life Pavilion, Odyssey... And a few others that would be controversial because they are "classics."
Universal is using every space they have... And quite frankly, their least popular attractions are still pretty darn great!!! (Those being Poseidon's Fury and The 8th Voyage of Sinbad). Every attraction is always up to par, and the workers over there are just as friendly and helpful as Disney's workers were, or used to be... Depending on the day and location.
Universal is using their space wisely and creating attraction after attraction with as little delay as possible. Disney, on the other hand, has recently been taking their time with opening and delaying new attractions/lands... Some of which ended up being mediocre (By what's expected from Disney) simply because of the budget cuts on the projects... Like Fantasyland. It's been 10 years since EPCOT has had a giant new attraction... It took Disney forever to fix HS and AK may are may not be successful with Avatarland.
So you're paying "more" for Universal Studios.... But for the huge amount of quality and effort put into their two theme parks. Everything is top notch and everything new goes above and beyond... Everything new at Disney has been going "below and budget-cutond." You don't need express passes at Universal... Because the Express Passes there don't make the Standby lines wait forever, as it does as a result of FP+ over at Disney.
So there's your answer.