Spanki and I have been working on a Python script called TDMT.  It is at the top of the page in the scripts link in my sigline.  The main Rosity thread about the script is also linked there....

The script seems to work for most cases like the one you seem to have, which has been extensively tested by JoePublic.  Apparently some meshes can have problems in the comparison process, as is recently revealed in the script thread....

On edit: I used the script myself, for the creation of a genital hip for V1.... 

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.