WDW is far from behind just because Uni added Harry Potter. Give that a few years and see how stale it gets. WDW is still way ahead with four parks, two water parks, two miniature golf courses, boating, golf, monorails, trains, boats, hotels, restaurants and Cirque, plus other things in DtD.
I've said it before and I will say it again, it is only stale to those of us that are obsessed with the place and have been there more times then we can even count. Of course, it's stale to us. We are to familiar with the place. Disney, in reality, has already done way more then Uni will probably be able to do considering the confines and the cost to expand their property. It will take years for Uni to come even with what is available in WDW. Two sections of one IP do not a player make. It does put them a step closer, but, it is not a final blow by any means. If what Spirit said about pending cuts to more expansion of major influence at Uni is true, and I have no reason to doubt it, then it will stay that way for the foreseeable future. And this is coming from a fan of Universal. I think what they have done they have done as well as, if not better in some cases, then Disney ever did. It just that the fact that Disney had such a huge start over Universal that catching up is going to be much more difficult for them then Disney upgrading and adding over time to maintain.