Long story short I am at 4 playthrough, already check ace full S and trying to get the remainaing medal.
But here is quite the hard wall, the timer to kill this 2 beast is extremely short and the "fastest" plane (f -15) don't have enough fire power with mgp, while the slow plane cannnot catch up (or simply not practicle to aim with only the water pistol of mgp)

I have try nearly all attack plane and the only solution I see now is to wait for "futur generation tier attack plane" that can carry (obtain via DLC/battlepass).

If anyone have try this stupid challenge I quite easer to see strat as I have seen none online