Rpg feels wrong-tank anti armor shell

 I can't hit even close moving range choppers. It feels wrong. Rpg needs buff. I think rocket very slow. Lock on anti airs are useless because they cant one shot and escape is easy from them. Also rpg front damage are very low aganist heavy tank. It need to be higher a bit. I remember now sometimes when i hit anti air vehicle with rpg i see 180 damage it is very low for anti air bcz it is not tank. Engineer repair very low  it feels useless to repair any tank. Also why tank anti armor shell have lower damage aganist air vehicles. It cant one shot choppers or jets even little bird.