It does say Miki support too but no mention of the other G2 figures. 

I'm not too bothered about that, my main reason to buy would be if it does a good job of V3 to V4 clothing because I have a lot of V3 clothing that would look good on V4 and I'd prefer not to have to use the V4 to V3 CR2 if I can help it!

Injustice will be avenged.
Cofiwch Dryweryn.