OK, but why do AP rounds bounce off of thin armor like the m3 or osti? There are definitely some irregularities with the armor.
Another one, try jumping off a cliff in the training arena. There is no collision model for gv's. You fall 10k, touch the side of the hill and stop instantly. Each time you touch the side of the hill you stop instantly. There is also no damage regardless of how fast or what you hit.
Even worse, The trees are all screwed up. Since the last change its much worse. There are now lots of invisible branches that if touched send your multi ton vehicle tumbling through the air often many yards away.
In short, vehicles are obviously FUBAR, to some degree with damage modeling and majorly with collision modeling.