[TomCollins]

Let's just change it to a generic win loss game with 47.5% chance of winning.

There are 9 scenerios:
Scenerio Frequency Value
L (2.5% -10
WL 24.9% 0
WWL 11.8% 0
WWWL 5.63% 20
WWWWL 2.67% 30
WWWWWL 1.27% 60
WWWWWWL .603% 70
WWWWWWWL .286% 120
WWWWWWWW .259% 220

So adding up those, you get an EV of -$1.225 per "round".
You could change the win % of the game very easily. Even with a 49.9% chance of winning, you get an EV of -$.05.