A few more numbers:
If shortstack held QdJc9h3d, hero has 21% 4 way.
Removing the shortstack's hand gives hero 31% 3 way.
3 way but counting shortstack's actual dead cards gives hero 29%.
twodimes
As it was, hero's share:
main pot: 0.16 * 187 = 30
side pot: 0.29 * 470 = 136
Total EV on hand = -$34
EV from decision point = -$26
Even with the terrible 4 way equity if hero had 35% in the side pot he'd be in profit. It's the 3 way number that matters. The other AA had 38%.
I don't know what the best case scenario would yield.
James