I don't think it really matters what anyone calls it to be honest. It's a cool old brake hub.
Calling it a 4LS is technically incorrect, but I don't think it even matters. I was just sharing what I know of that brake since I've been looking for one, and had learned a lot about it, and what it was.
I sort of doubt that it would work better than a 4LS Fontana, but who knows. I've heard some say that since it is an 8LS, it would be double the stopping power of a 4LS, but I don't think that's correct. The effective pad to hub contact area is roughly the same as a Fontana. It's just got the actuating arms for each separate brake shoe, so brake contact would occur on all shoes as you pull the lever. Rather than the cam action that gives some progressive breaking.
End of the day, I don't know or really care if it works better, the same or worse. I just personally think it's cool looking.