Why are the 11.75 Brake Better?

Actually the E-bodies were pin type, certainly most of them anyway. Lot of the B-bodies as well. My ‘72 Challenger and my ‘71 Satellite were both pin type calipers. And later it was either the M’s or the R’s too, I know I pulled pin type calipers off a couple of the later cars in the wrecking yards.
Ohh, guess that's why I haven't seen them then, I haven't messed with B and E bodies much, just A's and C's lol