Just to be clear I was talking about the 125 grain Defense load, I carry the 135 gr Duty load. I don't care for the "reduced penetration" idea that seems baked into the Defense line.
And yeah, looking at the data above, it terms of external ballistics, the differences between the .357 Duty load and a hypothetical .357 "9mm+p" type load are completely negligible.
Despite all this, I think a SAAMI spec for a ".38 Magnum" or ".357 Special" in .357 Mag brass at 9mm para pressure would help with both marketing and development of .357 self-defense loads. It would sure make it easier to recommend. 357 snubby loads if there was a easy term we all agreed on.