Most of what you say addresses braking feel (modulation, initial bite, fade resistance) and has nothing to do with stopping distance.
Your statement about drum brakes is just wrong.
A sliding tire is a sliding tire. The advantage of discs over drums is cooling/fade resistance. All other things held constant, the sliding tire with drum brakes will slide just as far as the sliding tire with 13" discs and 4-piston calipers.
The problem here is that the word "performance" encompasses many factors besides just stopping distance, and yes, it's a lot more complex than just how good your tires are. But, at the upper reaches of the performance stratosphere, there are a lot of things that come down to driver preference.
