Rainman didn't even post very clear pictures of the twins' faces. There's really only one shot (the one with Danny in the foreground) where you can make out their eyes. That suggests to me that the likeness wasn't his primary concern with those figures.
My thoughts exactly
How people can look at wonka and his oompa and pay 6+ grand for it then question 2600 for all of this with better likness than oompa and wonka - i do not understand.
Actually, the Oompa could be considered as one of his best likenesses. Great realism and proportions too