It just feels weird working with ICMizer at times. Perhaps I have to read more of the tutorials or something.

I have a 4bet shove calculator, and that and ICMizer's chip EV say this is an ok but not great 4bet shove. But when I put ICM ev or ICM $ on the spot, it says 99 is a horrible shove....

Keep in mind this is American sites, not Pokerstars, so the avg stacks are much much shallower.
Here's the spot: http://www.icmpoker.com/icmizer/#default If you guys cant see it let me know, and I'll post hh etc.

I was going hood with no HUD today bc it wasnt working. Villian has decent stats (in the top 300 in past 120 days)

Prior history is hes been at the table for 40-50 hands. Weve played 2 pots only. He won 1 postflop. The other, ss'd 20ish bb CO opened, I flated otb, and he squeezed with <3x 3bet sizing which lookked very bladed. We were both deep stacked, and I folded.

So maybe based off that, he thinks I have a high fold 2 3bet %....so I insta jammed here and felt fine about it but I'm still confused with ICMizers chip ev vs ICM