Lol I had to draw it out on paper too - don't feel bad man!
My (unfounded) theory on the VE airflow PID - it works fine when all of the sensors are within their ranges, and all the factory controls are in place. With the pill mod, you are effectively bypassing/altering the factory boost control. I think the same thing probably happens to those with manual/electronic boost controlers - the VE airflow is skewed.
You custom PID divided by 20 should yield "relative cam angle". subtract exhaust FROM intake and divide by 20 and you should have change in lobe separation angle. With those formulae you see that in the highest load column, the overlap decreases with increasing RPM. The overlap is even less at idle, and significantly more (four degrees) in the midrange. By making the exhuast more negative and the intake more positive, we are further decreasing the overlap. If we change both cams by the same value in the same cells, we are not changing overlap, but rather advancing or retarding the cam events with respect to the crank.
Back to the big picture, the problem that most of us are battling is the stock turbo not maintaining power up to redline. Moving the cams may change the position on the efficiency map, but that is still a steep learning curve for me.