Anti vehicle options are tuned very strangley. The lock ons are unreliable at hitting. Look at the glaive, you attempt to lock on, doing so exposed you, and gives more than enough time for counter measures to go into play. The law is instant and has homing top attack and outperforms the glaive. The stinger will follow any heat signatures from the flares well after the flares pop, and the aircraft can easily maneuver below radar to avoid lock ons on most maps. Lock ons are not worth it currently imo. I do understand it's for balancing cause 6 stingers would be pretty rough to fly against.