I think that there is something different about the way the different Butterfly ALC blades are glued together and also whether they do some treatment on the top ply of the blade, so I am not sure it is just ply composition that matters. I also think that it depends a great deal on what year the blade was made, since thicknesses of individual plys seem to vary from year to year. It also depends in a very big way on handle preferences you may have. This discussion seems to go on forever.
I have a bunch of Viscarias and they are most definitely NOT all the same. A lot is weight, but not all. Like anything else made of wood, I suppose. Some violins and guitars are better than others also.
But the one thing for sure is that I prefer the FL versions of any of my Viscaria blades better than either TBS or TB-ALC mainly due to the handle. That matters a lot. Of course, only the Boll blades are available with ST handles in any practical way or price. So if that matters, than the choice is made for you. TB-ALC has a harder surface because they treat it with something. Maybe UV light. So Boll-ALC is harder and crisper, often faster.
I find the two ZJK-ALC ST handle blades I have to be very much slower (too much), and I have a pair of ZJK-ALC FL blades that are much closer to the speed I like. And definitely A LOT faster than the ST ones!
My favorite Viscarias tend to be older and slower, and around 90 g. I don't like the superlight ones, even when they are kind of fast. The best ones I have are series I and series H. Those are black tag ones, around 8-9 years old. These blades improve with age, not sure why, even when they just sit in a drawer. Maybe it is the wood drying, or getting wetter, or the glue changing or something.
The bottom line answer to the OP's question of "how will I know if....." is to to say you probably won't know until you actually try one for yourself. But if you borrow someone else's blade, you will at least get a feel for the handle and general weight distribution, which I think is a pretty big part of it.
If you buy one without trying one, you run the risk of not liking it, and there is nothing that a bunch of guys on the internet jabbering away can say that reduces the risk. You may not like what I like.