call pre is better than 4bet, but I can't fold there.
After flop, our bet looks weak. It almost seems like we've induced a shove. Everything we can do sucks at that point.

A few thoughts on exactly how 'nitty' MP is:
17/12 isn't that nitty at FR
we only have 67 hands on the guy so it's not very accurate anyway
we're at 10nl