It's actually for the smaller TOD sculpt, saw some decent results with that hat. Have the Hot Toys, but not crazy about the rubber look it has, though it's convenient for various sculpts since it's got some give. I have a Jnix hat coming that might work too -- I still haven't fully given up on that TOD sculpt despite it's size.
Ohhhhhhhhhhhhhh... I thought you were trying to make the MJ head work.
The MJ hat has an odd shape about it -- too wide at the bottom (because of the large head) and tapers too sharply to the top.