When the graphic Expected Value is calculated in Spin & Go's, HM2 assumes that payout is standard.
Unless you win it. Then it (almost) gives you EV in relation to the actual price.
This means, that when you win the big Spins, the graphic EV follows the winnings, but if you get sucked out, you only get very little positive EV.
Added up, the graphic EV will be to low in the long run.
Maybe this is because PS only saves the actual price in tournament results, when you win it?