I only checked the AHS site to make sure that the information here was correct. I never checked daylilies.org. So, I wasn't as bright as you were!
If you click on the photos below the main picture, those look smaller to me, though the bloom is very similar. I don't think they are the same cultivar though. It looks to me like a very similar, but wrong, photo got added to the main listing, and the correct photos are under that. Take a look and see what you think. They really are close, but the main picture does look like a HUGE bloom! It is drool worthy!