All having had decades of experience against which to "compare and contrast the differences", I and several fellow Officers (five of them and I) were not moved in the manner that you described- the "kid in a candy store" look, when we fired it, unless one finds appealing a round that generates excessive muzzle signature for what effect it has.
Sounds to me like you guys had your minds made up before you even got together to shoot it. Not unlike this fine gentleman:
Against my will, I was impressed.
The difference is you are more stubborn. Like they say, haters are gonna hate.
Your signature line is a fine example of such prose....
....since without the names (or a reference source) of those two military surgeons and the trauma surgeon purported to have worked on roughly a thousand gunshot wounds, it is hard to accept, let alone verify, that three such physicians made such specific comment regarding one specific loading (the S4M) in a relatively obscure caliber especially since other military calibers would produce a similar problem given identical (torso hit) placement.
Do you have a source for the quotation in your signature line?
Of course I have a source for the quotation in my signature line. Do you think I would have attached such a bold statement to each one of my posts if it were untrue or unverifiable? I plan on keeping it for a while because it makes the haters cringe...
It really isn't that big of a claim; nearly everybody Hasan shot at Fort Hood center mass died and they received immediate medical attention. Those that survived were mostly shot in limbs and other non-vital areas. This was using FN's watered-down factory ammo. Had he been using S4M? Ouch... Then again, stopping power is another word for accuracy, so perhaps S4M wouldn't have made much of a difference. Dead is dead. Sorry for bringing up again a very distasteful event.
The 5.7x28mm is a nasty round and perfectly capable of doing everything to bipedal threats that other common self-defensive calibers can. The key is and always will be -- aim.
but realize that the cartridge has had one and a half decades to exceed, supercede and supplant all of the other cartridges claimed to be "inferior" to it and it has yet to do so. The markets, both military and civilian, have spoken to that already there being at present only one pistol, one rifle and a few hard to find "specialty" rounds.
There is no reason to think that the Five-seveN was created to replace all current handgun calibers -- that is absurd. The Five-seveN is merely the highest tech pistol on the market and gives us a glimpse of the future in pistol design. Guns will get lighter, bullets will get faster, bullet intelligence or behavior if you will, will get smarter.
The Five-seveN obviously does things no other production pistol can, and has advantages that many production pistols do not, but it doesn't mean you have to toss your Glock in the trash. The thought of me caring a Glock instead of my Five-seveN makes me chuckle, but that doesn't mean you are a fool for carrying your Glock.
I could show you videos of the Five-seveN doing things that would make people say wow. But those videos are private and I have no interest in putting that kind of info out publicly. The Five-seveN is an ample self-defensive choice and a unique one at that. That is all you need to know.