yea MOA isn't that big. it's only big because it has that rollercoaster inside. anyone can be a big mall if you shove a coaster inside it. lol.
SCP (South Coast Plaza, Orange County, CA) is #11 on the list, also beating MOA. Although, the demographic for both malls are entirely different.. KOP and SCP are the real rivals (west vs east and everything else about the two). I like to think that KOP and SCP, though having less retail stores in quantity, have higher quality stores and brands. Flagships and exclusive brands and designers.. while most of the malls in China have over 5-600 stores, they're all a bunch of ma/pa stores.
personally i would prefer a mall with quality design, quality brands, and quality shopping experience overall. a giant mall can get out of hand, and can be packed with people i really don't want to be rubbing elbows with.
and fyi: MOA WAS the largest in the US. until KOP and SCP expanded. then they were bumped way way down.. cuz then Union Square expanded and so did plenty of others. Time for MOA to build a few more floors up on top.. haha.
There has actually been a lot of talk/planning on expanding the MOA quite a bit so we'll see what happens *shrug* A lot of talk, a little action (so far)
I found a link!! Mall of America - Phase 2