Pokethru can be an easy fix... if the suit is s'posed to fully cover a given body part, just turn off visibility for that part on Vicky (in the Heirarch Editor in Poser, or on the Properties tab on the parameter dials. I don't know the equivalent in daz, but there should be one)

 

As for why they work differently.... different progs/ different methods would be the easy (& prob'ly unsatisfying) answer.

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