Personally across my chrony at 4000' ,its a dead heat between the 9 and the 38 w/125gr bullets. Step up to 147s vs 158s ,my 9 falls off considerably while the 38 holds on. Both sets were standard loads from Federal or Winchester. The 9 showed me 1210/925 125/147,while the 38 gave me gave me 1150/975 125/158. Now Im no engineer,but terminally that looks like a dead heat anywhere inside of 60 feet. Given this the 38 is less by 60fps w/125s but 50fps more plus 10grns of bullet. Those are hard numbers from a 4"FEG HP-9 and a S&W 4" "police" revolver.
In the end dead heat.