Nothing cosmic. It's described in a -1-1 example. Say you were applying at 120 KCAS and releasing at 60. On chart 2/3, you would calc 120, then slide down to 60. Carry the difference forward rather than computing 120 and 60 through all 3 charts. I'm not sure I agree, given these charts are exponential.....but it lets me do things I want to do.
The only way to do multiple heavyweight landings is to avoid braking below 60 KCAS so you can subtract that energy. Therefore, reverse and stomp the hell out of the brakes 120-60, then try to reverse the rest. Brake temp sensors in brand new planes? Nope. Carbon brake charts? Nope. Heavyweight assaults per copilot per year? Eight.