I need to play a lot more to make up my mind, but I have to say I saw a few weird things. In one case, I hit a tank 4 times with almost no result: on one hand, I was hitting it from the top, so damage was understandably not great, but on the other, there was no one repairing it. When I ran out of rockets, it was pretty much close to full health?
I did however blow up a couple of tanks with C4 last night, 4 seems to still guarantee a kill, so maybe something weird happened in your case.
As for the air play, well it is indeed very different now. I don't mind choppers being more resistant, they were basically air coffins before, but I did have a couple of games where enemy choppers felt impossible to take down. I think the AA nerf may need to be scaled down somewhat.
But again, I would need to play quite a bit more to make up my mind.
