Peter S you have a point and that is one reason I choose to carry a J frame as apposed to a .380 acp is because the .38 Special has a wider variety of bullet weights. That is just one of the many reasons I choose .38 over .380. I would say most 9mm loadings are hotter then most .38 Special loadings but if you get into high weigh prejectiles per loading then it does come close to evening up. Buffalo Bore for example their 158 grain LSWCHP is 1,000 F.P.S with 330 Ft-Lbs. M.E. and their 147 grain +p+ is 1175 F.P.S with 451 Ft-Lbs muzzle energy. That being said and with one of the hottest loading manufacturers.
"Perfection is the enemy of good enough"