Again...WHY would the guy shove 2 stacks all in with the mortal nuts or the actual nuts? No way in hell he does that. Theres no card that can outdraw him. And theres no hand that can call him besides bottom set and if we have bottom set, he'll get the money in anyway later in the hand.
If he reraised the check raise to a normal amount, I might be worried but when he shoves 2 stacks in, I instacall.
Why would you be worried about the button? He very well could have KK, but look at the stack sizes. We have the BB beat 99% of the time and we both have much bigger stacks than the button so even if the button has KK, we're still winning a nice sidepot.