I (of course) will have to disagree with that.
Galactus 1/2 bust from SS
Darkness 1:1 bust from SS
MIB alien head 1:1 bust from ECC
Those are just a few I can think of...I might even throw the Freddy Krueger 1:1 bust from ECC in the mix as well. There are quite a few impressive busts done.
If XM were to do 1:2 busts like SS used to do...I would actually get them...or the ones that coincide with the statue of each character I own.