The chart at my link doesn’t say how quickly they drop, just whether they are (eventually) disabled and whether they are (eventually) killed. I still like that chart a lot, but it’s not the whole story.
From what I have read, many people automatically drop when shot, unless they are really tough and well-trained. First, being shot hurts a lot. Second, you’re supposed to drop, since that’s what you see on TV, so that’s what they do. That’s why you get a fairly high “one shot stop” rate, regardless of caliber or where the hit occurs. A whole lot of people drop or run when they are shot.
Those who continue to fight after taking a hit are different (and much more likely to get shot again, and they are the ones where caliber matters). Some tough guys fight with a .22LR hole and bleed to death slowly, or run away and bleed to death several blocks away. Some barely have time to take one more swing or to run outside before they bleed to death quickly with a .50 cal or 12 gauge hole somewhere in the body. Whether they are disabled/killed quickly or slowly appears to come from the kinetic energy transferred and to some extent the size of the hole (plus shot placement, of course).
There are a ton of other variables but your first statement isn't supported by your chart.