Sport Rider Magazine wrote an article on aftermarket rims back in Feb 2004, thas where I read about MOI etc.
They compared a set of gsxr rims to multiple aftermarket:
gsxr front: 480lbs per inch squared moi, 10.28 lbs
gsxr rear: 880 lbs per inch square moi, 16.8 lbs
PVM alum front: 346lbs per inch squared moi, 7.96lbs
PVM alum rear: 489lbs per inch sq. moi, 13.44lbs
Marchesini alum front: 362lbs per in sq. moi, 8.82lbs
Marchesini rear alum: 496lbs per in sq moi,13.8 lbs
BST carbon front: 217lbs per in sq moi, 5.5lbs
BST carbon rear: 304lbs per in sq moi, 10.38lbs
PVM Mag front: 209lbs per in sq moi, 5.6lbs
PVM Mag rear: 290lb per in sq moi, 9.76lbs
There were other aftermarket comparisons as well but you can see the mag and carbon numbers were very close! Dymag also makes a carbon three spoke and it numbers were slightly higher then BST's.
Keep in mind, this was back in 2004 base on a gsxr rim, not sure where a zx10 rim would fit in as stock or what the aftermarket numbers would be for it.
my 3 cents