As a visitor, paying money, where am I going to get the superior experience, Disney or Universal? That's what I mean, and I disagree that 'the facts' prove Disney is a superior guest experience, for reasons I've already mentioned where I think Universal has them beat.
IMHO, the answer is -- right now -- Disney offers the overall superior experience. Now, mind you, Uni is rapidly closing the gap, but up until the late 2000's, it wasn't even remotely close between the two resorts. The thing is that for frequent guests (especially locals with APs), Uni has been adding a ton of new stuff and is "fresh" so it is likely to appeal more to that group. But IMHO for infrequent or first time guests, WDW has more to offer as a total experience.
Someone asked in what areas WDW is clearly superior and I would argue the following:
* large scale entertainment. Shows like Wishes, Fantasmic! and ROE plus the MK parades are superior to what is available at Uni. Even the limited stuff like the Frozen and SW fireworks fit this. I expect RoL to continue this trend. I'm actually surprised that Uni hasn't added a lagoon show to IOA.
* calm, sedate "family rides". While Uni has some decent rides of this time, their "ground breaking" rides tend to have a lot of movement and can be jarring for the people who want more relaxing experience rides. This is a big benefit to Disney because these types of rides (think POTC, IASW, HM, SSE, LWTL, Buzz, TSMM, etc.) can be experienced by everyone and doesn't exclude any potential guests. Uni has a smaller number (and less impressive, though ET is cool) of such rides.
* better water parks (hey, this might change with Volcano Bay but right now at least)
WDW also has more variety of restaurants (and arguably better quick service options), greater quantity/variety of M&G (if you are into that sort of thing). There's more "resort" activities present (golf, water sports, carriage rides, movie nights, etc.) if you are looking for that.
That being said, it is silly to suggest that Uni doesn't have some aspects where they have met, if not exceeded, WDW. Certainly the newest rides at Uni are groundbreaking compared to offerings at WDW.
Edit: I should also point out that there's also a lot more total "stuff" to occupy your time in the parks at WDW. Even discounting the differences in total rides between the resorts, you have a lot of shows, streetmosphere and "walking around" areas (animal trails at DAK, TSI, the countries at Epcot) at WDW which help to make a full vacation. Uni certainly has a decent mix of rides and some of those types of activities, but to to anywhere the same degree as WDW.