All-in with KK as overpair, very -EV?

[Tharpab]

Lets say your playing at Party and you raised before the flop $20, blinds are $5-$2.5, one person calls and it gets HU($48 pot) and the flop is J 8 3 rainbow, you bet pot your opponent goes all-in for lets say $200, so you have to call $155 to win $295, 1.9-1, you still dont have a solid read, I'm begining to believe this is a VERY -EV call. Eliminating QQ/AA calculation because they give the same profit or loss and he would probably do this move with both hands, so the net of that is almost 0(its 50/50 for you to be a favorite). But he could also have JJ, 88, 33 and MAYBE AJ, so your only hope to go get QQ or AJ(But with AJ may not happen 100% of the time since some of the time, as much their idiots, they will be afraid and just call), is my math off or this is a very -EV situation?