Attached is a render using one of one of Steph's Muscle Poses. The morphs are set as follows:

Stephanie Morphs
Muscular - 1.0
Biceps - 1.0

Victoria 3 Morphs
Muscular1 - 1.0
Bicep - 1.0
BicepFlex - 0.2

While Stephanie has better symmetry, IMO, Victoria 3's has more realistic muscles than Stephanie.

I think it will be easy to get a wider range of muscle using V3.