Firstly, it's defo right for strategy so I've moved it.
Secondly, of course it's a plus EV call, you're behind to only one hand.
Most likely he's holding T x or Q x (other than king), in the first case your full house beats his, in the second you chop.
The number of times he'll push with the first case, outwieghs the rare times you'll lose the pot.