Two points.

1)
You have given the situation of pushing from SB against BB AND post behind limpers (checkers). You've correctly calculated the equity assuming top 3.5% calling range. BUT you've forgot about the limpers. They TOO might have checked something in the calling range and wake up to call. So assume one post in the Cut Off. Your chance of getting called is now 1 - 0.965^2 = 6.9% If you recalculate using these numbers, you'll get an unfavorable result.

2)
MOST IMPORTANTLY, if you have AK (one of the best hands in the game) in the SB AND everyone has folded to you AND there's dead blind money then I'm thinking: "OMG HOW CAN I WIN LOTS" not can I push and get a +1.19 +EV. Even if it IS EV, its surely not the MOST EV. And that is the point. Pushing KK on a rainbow K72 flop is +EV too, but is it the most +EV?

I will never open push AK with 100BB effective stacks. And I don't think I'm missing out on much