The exporter is pretty much a work in progress, as more stuff needs to be automated (like the obj step... maybe a check box to select whether it's exported or not since you don't need to export it every time)... but if Poser can get the subd working, the look between versions will be pretty much identical.

I've been testing it out with our characters, seeing what needs to be done in order to have the proper inj in poser; and our new characters will include INJ/REM files in addition so they can be used in Poser.

But to answer the OP's question, the exported CR2 contains poser's weightmapping. DS's weightmapping is contained in the .DSF files so a program will need to read that. I know people have asked about a self contained cr2, but genesis is a platform so that platform still needs to be read for updates and new morphs, so it needs to be read by a program that supports the platform. They were able to get the exporter out by reusing code and functionality within the program and modifying that.