see, thats a much better question to ask

EV is your expected value, which basically shows you your profit before luck is factored in. i'm not 100% sure how it's calculated for SNG's, but i'll give you a cash game example

I have AA, and go all in for $100 pre flop and get called by KK who has me covered. i am approx a 82% to win the hand and to win the $200 pot (lets assume we were in the blinds and there's no rake for simplicity)

My Green Line in my graph will either go up by $100 or down by $100 dependant on if i win the hand or not. however, regardless of this, my equity in the hand is +$64 (as i am an 82% favorite to win a $200 pot.

i would assume for sng/tournament the ev would take into account payouts and be similar to an ICM calculation based on the hand you are eliminated from the tournament