Quite honestly, I feel that Motion is slightly more Point-Guard oriented than Run N' Gun. I like Run N' Gun because my 3 outer guys (PG, SG, SF) all get good amounts of shots, but with Motion, I feel that PG/SG will get a LOT more shots than SF.
From my experience, only like 2-3 games worth of Motion, however, I'm making the following guesses:
Motion:
PG-30% shooting
SG-30% shooting
SF-20% shooting
PF-12-15% shooting
C-5-8% shooting
RnG:
PG-27% shooting
SG-29% shooting
SF-25% shooting
PF-12-15% shooting
C-4-7% shooting
These are rough estimates based on shot quality and not referring to second-chance shots by offensive rebounds.