Hands he thinks are the nuts. 44, 55, 67.

Combinations

44 : 3 x 2 = 6
55 : 3 x 2 = 6
67 : 4 x 3 = 12

So you are 50/50 as to whether you are ahead or behind.


Equity vs

44/55: almost all of it
67: 30% ish.



[Edit: Oops. 67 is 4 x 4 = 16. so he is 16:12 to have a straight. But pushing should still be pretty +EV ]


So pushing here should be pretty +EV especially if he will sometimes do this with an overpair/draw.

What are the chances he stacks off with 67 after the board pairs? If he wont then Id guess its better to push now so that scarecards dont kill your action Vs a set.