The automatic ballistic defense systems a tank uses would obliterate an aircraft. They are basically shaped charges that explode outwards to deflect a munition. It only works because tanks have thick armor in a dense, heavy, package.
It is more common to have active electronic systems. For example, one such system fires grenade-like projectiles upward that then explode in a downward direction. The timing is accurate enough that the incoming attack is hit by the shrapnel. Another system is more like a shotgun.
The more reasonable comparison is ship-based defense systems. The USA uses the Phalanx CIWS, which fires simple dumb projectiles of the same diameter as those of a typical fighter plane gun. About 100 are fired to destroy an incoming missile.
Adding an AI to a modern fighter makes it an awful lot like a flying Phalanx CIWS. You have a nearly identical gun with a nearly identical radar.
That helps the defender. The faster the missile goes, the harder it gets hit by defensive shrapnel.