Question to EASTBAY & SNG Ptools experts

Total number of players : 4
Seat 4: doobs ( $4040 )
Seat 5: Slainte2000 ( $2430 )
Seat 6: HERO ( $550 )
Seat 8: GERMINDOL ( $980 )
Blinds(150/300)
** Dealing down cards **
Dealt to HERO: Qs 8s
Hero is all-In [550]

I thought it is a standard push, but when i ran this situation in SNGPT I was confused.

When i set up calling ranges like:
BB 22+,A2+,K2+,Q2+,J6+,T7+,76s+
SB 22+,A2s+,A3o+,KTs+,KJo+,QJs
BTN 66+ ATs+ AJ+
The push has positive EV.

But if i make BB calling range 100% (it is actually +EV for BB to call ATC) my push becomes -0,9 %.

So adding to the BB 22+,A2+,K2+,Q2+,J6+,T7+,76s+ hands like 23o against which I am a favorite makes it -EV ???

I understand that 100% call range makes 0% probability to take blinds without a fight, but I think that even going in to a coinflip with my stack is'nt that bad ???


What I am missing? And wuold you really fold that hand ???