As far as i know Paul the TE abs hero i have is from Matt' set for stun molds. Which is the dave m helmet, the same base of the DL helmet?
I have spoken to Matt about how he gets the hero look from using a stunt helmet as a base and he has told me that he under cooks the plastic so it makes the face wider and also so that the forth tooth is not so visible.
The TE is also a slightly thinner plastic being 0.060 i dont know what the DL is maybe 0.080?, it is thin but not as thin as the TE.
I have just done some simple measurements and the TE is ever so slightly smaller, like 2-3 mm. So although it is very close, it is actually smaller.