None of those other parks you mentioned are really in the same "league" as Disney and Universal though. They don't come close to being any kind of threat to Disney. Universal, on the other hand, most definitely does. They've already produced at least two attractions (Spiderman and Potter) which many consider to be superior to anything Disney has done. The same can't really be said about parks like Dollywood and Busch Gardens. So it's not surprising in the least for hardcore Disney fans to not have an issue with those parks. In fact, if you think about it, it says a lot that Universal is always the park that comes up when making comparisons to Disney.
Well, regardless of if parks like Busch Gardens and Dollywood are not compared to Disney as much as Uni is, I still think they are great parks that I actually prefer OVER Uni. My point was (and still is), if I felt any kind of emotional connection with Uni or had a strong interest in the "properties" their attractions are based on, I would have an AP there. My lack of one is NOT a result of loyalty to Disney; its based on a relative lack of interest in the Universal brand and properties compared to Disney parks or even other parks!
You can have the most technologically advanced attractions and parks in the world, but if I am not into most of the characters, themes, and stories those attractions represent, I won't be interested.
As for Uni being better themed than every park other than Disney, that is debatable. IMO, Busch Gardens parks have a very high level of theming that is more aesthetically pleasing than Uni. One need look no further than the wonderfully charming Williamsburg park with the excellently themed European villages integrated perfectly into the beautiful natural landscape to see why.
And Busch has well-themed attractions as well. Such as DarKastle in Williamsburg, which is also very "high-tech". And the now-closed KaTonga show in Tampa (which I attended the last performance of a few days ago) which perfectly fit the park's themes of both Africa and animals, and is for my money the best live musical I've ever seen in ANY theme park.
As for Uni being a "threat" to Disney, I find that laughable. I think the biggest reason they are compared so much to Disney is because they moved into Disney's market with the direct intent of marketing themselves as an "alternative" to Disney, as well as the idea of capitalizing on the success of Disney, as there was already a large amount of theme park tourism in the Orlando market (thanks, of course, to Disney). Put Uni and IOA in ANY other market outside of Orlando and their numbers would undoubtedly be significantly less than they are now (and they are already so far behind WDWs that the idea of being a true "threat" to me is, again, laughable!)
Oh, and Uni has always had "Disney envy" and compared THEMSELVES to Disney, while at the same time often taking subtle (and not so subtle) cheap shots at them. Meanwhile, Disney just goes about their business without even acknowledging that Uni exists! So this whole idea of Uni being somehow comparable to Disney is IMO something largely perpetuated by Uni and their fans, made easier because they compete in the same markets as Disney.
As evidence, check out this rather pathetic page that was on the Uni website until very recently:
http://web.archive.org/web/20080410083854/http://www.universalorlando.com/disney_comparision.html
We get it, Uni. You think your properties are "hipper" and "cooler" and "hotter" and more "up to date" than Disney's. The irony is, everything on the Disney side of the list interests me MUCH MORE than the Uni side. Disney's "yesterday's fairy tales" are TIMELESS for me and a big part of what makes Disney so magical. And every other thing on Disney's side of the list is more appealing for my taste than the Uni "answer" to it.
So for me, this Uni attempt to make themselves look better than Disney is actually an "epic fail"!