At this point I want to see a showdown, therefore I think calling down is the correct play. I want to see a showdown which this hand and by just calling here and check-calling the river unimproved we get to see it in the cheapest manner. If we 3-bet here and it gets capped and even if it does not get capped, the pot becomes larger and folding becomes more difficult on the river following our 3-bet.