Yes, the vehicle does have more options, hence it's PC. I don't see the problem, there. Even if the turning radius is 360º, they are still only allowed one turn per AC, unlike troops (which allowed to turn as many times as they like in a given AC). I have seen many players "sidestep," or other illegal manuevers, and have politely reminded them that they need to follow the rules. When a vehicle can only make one turn in a constricted area, one of two things happens - they get slowed down because they have to exchange forward speed for manueverability, or they find themselves out of position as they attempt to use all their MV value.
Again, I think we are, really, just discussing play styles here. I still believe that there is, currently, nothing wrong with the way vehicles work, in this game.