Short answer - Genesis needs weight maps to work, so it works only in Poser 9/Pro 2012. It needs to be exported from DAZ Studio, there is no Poser installer IMO. Not all features work with Poser. So it's not that successfull in the Poser Community at the moment. 

And yes, I would prefer that this thread does not turn in another Genesis discussion.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.