I may regret posting in this debate as these tend to get a bit nasty at times but I was thinking about where Universal is in comparison to WDW. I'll start off by saying Universal has beyond the shadow of a doubt created some impressive expansions this past decade. As much as I hate to say it the quality of Universal's new stuff and the pace of all of it definitely beats WDW. Now with that said, WDW also has been around a lot longer and as someone else pointed out has done most of what UNI is trying to do at this point in time. I mean by building new hotels, rumored water park, and of course the plussing of their current offerings. Sounds like UNI is hitting their version of "The Disney Decade"! It's a coming of age as for the first time ever UNI is truly a multi-day resort now and shows no signs of stopping anytime soon. No Disney hasn't added the technology that UNI has but in the Disney Decade they added The Twilight Zone Tower of Terror and Sunset Blvd, Star Tours at MGM, Test Track, Disney's Animal Kingdom, Splash Mountain, numerous new resorts, Rock 'n' Rollercoaster, Disney's Blizzard Beach, two minigolf courses, DVC was born, DCL (I know this is a stretch but think Land and Sea package), Downtown Disney upgrades including new nightlife Cirque and DisneyQuest, and numerous shows and smaller attractions as well. This is where UNI is at today. I agree I'd love to see WDW pick up the pace and expand a lot more than NFL or MM+ but the two resorts are in two completely different stages of development at the moment. I know it hasn't been announced but we all know DHS is going to see some major attention in regards to Pixar and Star Wars, Avatar will finally open and despite the IP choice will most likely impress based on videos and concept art recently. This will undoubtedly help get these two parks to be full day especially with DAK's upcoming night entertainment offerings.
Long story short
WDW= working to spread crowds more evenly across parks and infastructure/ operations upgrades.
UNI = working on their Universal Decade.
I like both but can see that they're in entirely different stages of development and WDW will be fine for now. We all know Star Wars will most definitely be a reason for some to come down way more than Avatar and possibly even Potter. That's a huge fan base spread over many generations. This is where WDW will once again increase that attendance and growth gap in my opinion.