and neither the 9X25 Dillon or the .440 Cor-Bon is going to be any more effective in stopping a fight than the plain old 9MM Parabellum.
There is one TFLer that I recall saw the results of a person shot with a .50 Desert Eagle. If I recall correctly, he said the exit hole was so big a human hand could barely cover it.
What does this mean? That's substantially more damage than any Parabellum round could cause. More damage equates into a higher probability of the target being incapacitated.
Does this mean that we should all start carrying .50 DEs? No. But to say that a cartridge that you can take an Grizzly with would be no more effective against a human than 9x19 is to ignore the great difference in wounding capacity between 9x19 and, say, .440 Cor-Bon. Will a 9x19 kill you just as dead? Yes. Is the 9x19 more likely to do it than a cartridge that makes a much larger wound? No.