I have all kinds of films of taters hitting planes and doing next to nothing damage. A hit from a tater on the engine of a jug can stop it dead in its tracks. I have put two into the engine nacelle of a lanc and not even gotten an oil leak. My personal favorite was hitting the cockpit of a dora, actually seeing the round impact the instrument panel from the opponent, on film, and watch the guy fly away.
Not a one shot kill weapon for sure. I think it all boils down to timing, skynet, luck.