Except Universal only added one new ride. If WDW did that, my guess is that people would be all over it. Most of Diagon Alley is a set. Fake store fronts were very disappointing - sure they had some nice effects, but there was nothing to do after you watched each one for a few seconds.
If you want to get technical, Universal added 2 rides with the Hogwarts Express. Yes, I know with the second ride you need a park to park ticket to enjoy it.
So comparing, New Fantasyland added 2 new rides, a new interactive meet and greet and shopping/dining. Also, the rethemed the area around Barnstormer and moved/doubled up Dumbo.
It's tough to get "all over" Universal when they have been constantly upgrading the parks rides recently. Comparing what the 2 parks of Universal has done recently compared to Universal's 4 parks is interesting in terms of rides and major attractions.
USF- 2009, Hollywood Rip Ride Rocket, , 2012 Despicable Me Minion Mayhem, 2013 Transformers and Springfield retheming, 2014- Diagon Alley with Gringotts and Hogwarts Express.
IOA - 2010- Hogmeade , 2012 - "plussing" Spiderman
Looking forward, 2016- Kong is opening (at IOA), 2017 - Fast and Furious is supposed to open in the Studios, 2018+ Nintendo is expected to take over Kids Zone, Twister is supposed to be replaced.
Looking at WDW during the same time frame,
MK - 2012, Little Mermaid, Enchanted Tales with bell, Dumbo move and retheme, 2014 - 7DMT
EPCOT - 2009 - Sum of all Thrills, 2012-Test Track Retheme
DHS - 2008 - TSMM
DAK - 2014 New home for Festival of the Lion King, 2006 Everest.
Disney has a lot of interesting things coming 2017 or 18, Avatarland with 2 new rides, Frozen attraction in EPCOT, 2019+ Toy Story Land and StarWars land.
Universal had it's "dark time" prior to 2009 and their attendance showed for it.
E-ticket...not E-ticket. Pretty sure it would be considered a "headliner". Also SMALL WORLD was considered an E ticket back when E tix were a thing. I personally would say that Disney considers it's headliners to be E tix. An E ticket doesn't mean thrilling...it means POPULAR.
And the QUEUE for Gringott's is more impressive and entertaining than the entire 7DMT experience.
And Peter Pan was originally a C ticket. So, ticket did not necessarily equate to popularity. In general, the "E ticket" had a grand or state of the art nature for it's time. I'm not sure 7DMT quite lives up to that in my book. It is a very popular "D ticket" in my book.