...But we do know that ball out of the Mauser and Tok are wounders not stoppers.
Not picking on you, Sir, but using something you said to make a general point: ALL handgun rounds are wounders, not stoppers. Shanghai Police used a variety of firearms including Webley revolvers in .455, and a few Colt Pocket Hammerless .380s. They had oddball rules, too, IIRC, about loading and carry, so as to avoid inexperienced officers having AD/NDs. I read one account where a Shanghai police officer engaged a .30 Mauser armed bad guy in a shootout. Cop had a 1911 .45. Most of his good, solid torso hits with the .45 were ineffectual. Most good, torso hits short of severing the spine or perhaps taking out the top of the heart of aorta are not instantly fatal. A person with fully oxygenated blood can fight full-on for 12-16 seconds without a heartbeat. That's a lot of shooting/stabbing/fighting. Fortunately, most bad guys, being typical predators are apt to leave expeditiously when they begin taking serious damage. For those that don't ... well, that's what shot placement is for. A .45 in the shoulder is intrinsically no more effective than a .380 in the shoulder. A .38 spl through the heart is probably not noticeably any better than a 10mm through the heart. A .25 ACP that cuts the medulla ... well there is no such thing as "more dead," though one could certainly argue a heavier or faster bullet stands a better chance at breaking bone.
Now, as to the 7.62x25mm "Tok" round being okay for HD/SD, there are far, "worse" choices. Are there "Better" choices? For many, yes, as so many of us live in cities or tightly packed communities. For those over penetration is a factor but in reality, even the best JHPs often don't expand and may over penetrate. Rounds designed to beat the FBI test may well totally perforate a slender assailant (e.g. meth-head burglar) and pretty much any duty-level handgun round can and probably will penetrate every wall in a common house and/or the exterior walls with enough force to kill or wound anyone on the other side.
The Tok round is a penetrator because you have a small (.30 caliber) hard projectile (FMJ) zipping along at some fairly impressive (for a handgun, still way slower than a rifle cartridge) velocities. Small, rounded, jacketed surface area plus speed equals penetration. There is no magic and it's not The Ultimate Combat Round. Even in the early 20th Century, the legendary Mr. Fairburn with the Shanghai Police invented a bullet proof vest to stop the .30 Mauser round upon which the .30 Tok is based (and is practically identical). Is it a "bad" round? No, not particularly. Are there "better" rounds? That depends on what you need a pistol round to do. There are indeed JHPs available. I've got some but haven't tested them ... yet. I've heard mixed reviews of them, but from what I've heard when they do expand penetration is, not surprisingly, much more limited. I'd recommend shooting quite a few and besides testing in your favorite medium, being sure they work in YOUR gun. I'd suspect they'd do fine, but as I'm responsible for what I unleash, I like to be as sure as I reasonably can, y'know?
Pistols are poor stoppers. They poke holes and even "big" bullets really aren't all that big when you consider the surface area of the average human torso. "Fast" pistol bullets usually are far, far behind rifle speed which is needed if hydrostatic shock is to be a real factor (I think that threshold begins in the vicinity of 2,200 fps, but I may well be off by a few hundred fps). Have a Tok or a CZ52? Do you know and accept the limitations of the cartridge (all cartridges have pluses and minuses)? Will it suit your needs? Okay, great. Use it in good health. If not, then enjoy having the cool piece of history and the neat cartridges it fires, and get something that better suits your needs as soon as you can. I like validation of my choices as much as the next guy, but I carry/use what I believe suits MY particular needs.