Also, apples and oranges. You are comparing modern day munitions and armor to sci-fi future munitions and armor. So real world logic will always be a fail.

Also, I have run over people with my tank.

But I do agree it is too much damage too quickly on a fully decked out non-militia tank. However, are you sure those guys aren't throwing AV grenades in there? As a scout I AR tanks and toss AV grenades at them, though with others helping it generally ends up being an AR that gets the official kill stamp.

I don't shoot at tanks with an AR, unless I notice its on its last leg. It's a waste of my ammunition to just sit there and blast away aimlessly at a tank that could kill me with a single shot.

You know what's funny? People actually think that the tanks are overpowered. How's that for irony?

Also, just because someone is using a strategy that seems unorthodox doesn't make it an exploit. According to ccp, exploits generally involve the use of actual glitches in the game itself to gain an advantage that cannot be obtained otherwise. For example: surrounding a tank with nothing but assault rifles and destroying it that way is not an exploit as anyone can do that easily without the need of a glitch. Now, if someone were to have discovered a glitch that enabled them to destroy your tank in just one or shots from a measly rifle, then that will be considered an exploit.