Quote - Man!!.........that is seriously Foobarred or I just did something wrong. The same figure saved out as Obj and imported to Vue came in at 5.3 cm.......WTF!!!..........what's that about?
I never use that much because I don't do modelling, perhaps I did something wrong!

No you didn't do anything wrong.
You have to remember that OBJ units have no inherent real world scale, the exporting and importing applications are what determine any correspondence and rarely if ever agree.

When you import an OBJ, Vue uses it's own internal scale so 1 OBJ unit == 1 Vue unit == 10cm.

When you import from a PZ3, Vue knows it needs to use the appropriate Poser scale factor.