Problem with EV graphs:

Suppose that over my last 10k hands I've had AA against my opponent's KK all-in preflop 10 times, but have never had my KK run into opponent's AA. 2 of those 10 times, villain caught a K on the river to beat my AA. My graph would say I'm running below EV, but I am actually running fantastic since the combination of AA vs. KK and KK vs. AA AIPF spots are more or less breakeven in the long run.

There are a hundred of these kinds of examples, and as others have said for a variety of reasons the EV line is essentially meaningless... just focus on making +EV decisions let the line take care of itself.