Well, something has to be worst.
. But it is partially my own personal bias as I remember being DRAGGED around the boring World Showcase in the 80s when I was like 9-10. I mean, I remember loving Future World, but the World showcase was a slog.
Frankly it is too much walking for very little attractions. Sure . .there are enough attractions for kids, but I find them few and far between. Compared to the other parks, I just feel it has the least "preschooler" attractions and the most walking. Is it AWFUL? No. but it is the worse (in my opinion). Animal Kingdom has the animal exhibits and shows even though the kids can't go on Everest or Dinosaur. DHS has the Disney Junior stuff, TSMM, a ton of meet and greets and all the shows that are right up little kids alley (like Muppets, Frozen and Little Mermaid). And MK .. well. no need to explain that.
I decided not to go there until my son was tall enough to go on at least Test Track and Soarin'. I just felt there wasn't enough attractions there to warrant a full day at Epcot with a 2-3 yo. It was also because I decided to do only two park days on his first two trips .. so we had to cut something. And I decided to cut Epcot out until his THIRD trip when he was tall enough.
We went last March (he was 5) with his friends and he enjoyed Epcot (though he and his friend were VERY upset that the car they painstakingly designed in the Test Track queue did NOT show up to get into.
). His sister (5 mo) obviously didn't have much to do .. though she was fascinated by Turtle Talk. My take has changed a little bit, seeing how my son enjoyed the things we did do (Test Track, Soarin', Spaceship Earth, Nemo, Turtle Talk, Garden Grill, the Land, and just getting fun pictures at all the topiaries during Flower and Garden). We also avoided the World Showcase in order to avoid tiring/boring the kids. With an infant, our days were purposely cut short.