It's interesting how people cite the Ft. Hood shooting as an example of how effective the 5.7 round is.
43 people were shot, 13 died. Thank God he didn't have a 9mm, .40 S&W or a .45 ACP as the fatalities would likely have been higher.
Pretty late to this latest battle going on since I was traveling. With respect to your post, please explain how the 9mm, .40S&W, or .45ACP would likely have performed much better than the 5.7 given data in the following link;
An Alternate Look at Handgun Stopping Power | Active Response Training
The 5.7 is not listed there but it would seem from the info that you posted, it isn't any better or worse than any other round.