There seems to be a difference in the body molds as well; look at the crisper hooves on the fa-uh, large eyed ponies! This kinda stuff is fascinating.
I believe the large eyed one are also known (unflatteringly) as fat-head flutter ponies.
I would love to see comparisons of 2 yumyums or even 2 hollywoods (if someone even has more than 1 Hollywood)...
Ponyfan, yep, that definitely looks like one!