Wait a minute . . . in that pic, both faces look to be the same size. And just what the heck does "300mm" mean when applied to a head? This is getting ridiculous!!
Show the bust next to any other common bust, and then we'll get an idea of a size comparison. Or state the SCALE used, not some meaningless "xxxmm" . . . whatever. (No, I'm not going off on a rant about scale/size.)
Anyway, from the comparison shown, the faces are the same size, and there's considerably less "body" to paint on the hussar vs. the cuirassier, so the "it's too big" comment seems a bit off-point, as well. Maybe a better comparison photo would be helpful...
It's still a topnotch piece of sculpture, and I can't wait to see one painted!