Hello NickSeraphim,
The All-In EV line on the graph is calculated by taking the actual amount won and either deducting or adding the amount you would have won with average luck.
So let's say I go all in with AA on an Axx flush draw flop against a flush draw. I'm 80.5% to win with my set in a $400 pot.
80.5% x $400 = $322 so what it's saying is on average that I should win approximately $322 on average when I go all in with a set of Aces here vs. his flush draw.
If I win, I would win $400, so I've won $78 more than I would on average i.e running good/okay.
If I lose, I win $0, so I'm running $322 worse off than I would on average so im running bad.
Using the example above let's say that we won the hand with our set of Aces. The actual amount won is $400 but with average luck we would have only won $322, so we're running $78 better than someone with average luck.
So in your graph you are running $55 better than someone with average luck.
I hope this helps you out mate ;).
Kind Regards,
-Steve