Do remember that it has been many many years since planet Vegeta had been destroyed. And Bardock would be about as strong as those Nameks that were being laughed at as it is highly likely that he was in the 1000's himself.
Considering he in his bulked up state and it completely drained him afterwards? Yes. He was #1 in ki control at that point and he was in a state that he couldn't really fight in as it made him relatively slow. Kind of like USSJ did with Trunks.
His base, non-buffed out state, is obviously much weaker and incapable of busting any moon.