The helicopters in the Battlefield games, can't speak for the older games but as far as my experience with Bad Company 2 and Battlefield 3 goes they are so difficult to control that I either end up flying them out of the map boundaries or crash. I have only ever managed to get a kill on the helicopter as a minigun passenger, driving it myself I fail every time. Making a vehicle difficult to control doesn't make it "realistic" or "edgy", that's bad game design.
The tanks and the cars on the other hand are at least manageable to control, if not a little clunky.
The tanks and the cars on the other hand are at least manageable to control, if not a little clunky.