41mgs down to 11 with no compression? Something seems off.

Those binary PMD files are always compressed, even if you have compression disabled on the other Poser filetypes. And morph deltas generally eat up more space than any other element in the CR2, especially for high-resolution figures like DAZ's Unimesh gang.

For comparison purposes, take a look at a blank V3 CR2. Without morphs, it's only a few hundred KB in size.