I have to say even if Osty is hitting harder than it should it is not hard at all to take out... My most favorite memory of taking out 2 osy turrets was in my Hurri MK1 (osty drivers were prob pissed) LOL.
Personally I don't see why more people don't drive LVT 4's to take out town. If you place the HE rounds right they take out several buildings at one time.