I think an EV discussion has to include more than the dynamics of the hand. Namely, the differences in payout between 1st, 2nd, 3rd. Also, how good are these two players? Is the short stack weak, or is he dangerous? What are the chances of winning the tourney heads up with maybe a big chip disadvantage, to being short stack, fighting the same situation with less chips?

For me this is a call and see the flop. J8s is not an iso hand, not when losing means being short stack or out (if button calls, which i dont think he is).