Hehe, and they were already heavily discounting Marvel merch from USH way back over a year ago. Heavily. Everything I saw in that park (which has no Marvel connection really - do they even get streetsmosphere?) was 50% off that related to any Marvel brand.
As to the ongoing park discussion, both sides are right in a way.
1) AK didn't really increase resort attendance,
*BUT*
(and this is a big Ursula-sized but)
2) That could be because overall people didn't find the theme the AK ended up as being terribly exciting, it looked more like a really big Epcot exhibit to them in advertising or some new land at the Magic Kingdom (strange? yes, but the average person says they can't tell the difference between Blu-ray and DVD really either).
A fifth park COULD drive more people down. Just like they will continue to be driven by Harry Potter for years to come. Even as Potter-mania dies down in a few years, people will still have it in their heads that it's there. Not everyone instantly responds to advertising right away, they may recall it years later and go, "Yeah, let's make sure we go to Universal, too". A fifth park with a really great theme and a really spectacular theme park - yeah, that could increase attendance. Just because AK didn't, doesn't mean something else couldn't (which is like saying one romantic comedy film bombs, no romantic comedy will ever be successful again).
ALL THAT SAID...I agree with "let's work on the parks we have". Both AK and MGM need major additions (major, e-tickets, multiple hopefully). MK will be looking pretty good after FLE, and of course there is always Epcot - some think it's perfect, some think it's a mess, but it's kind of always been that way in one fashion or another so it's kind of the grand-daddy stalewart.
MGM could blow IOA out of the water if they added a few more big rides - Lucasland (a Star Wars dark ride/restaurant, Indy), Muppet Studios with a big dark ride and some smaller stuff. That would be a hell of a park. At this pace, it will be 2030 before it happens, but it's one happy thought for me. 
(AK, well, that place can use anything major, but since I'm not a really big fan to begin with I leave that blue sky wishing to others.)