Early db is actually kinda odd, mostly due to Goku having not yet actually trained to properly control his ki, his ki control basically extends to kamehamehas, about it.
Later on in life, Goku can physically amp himself with ki, and is something the whole cast always inherently do.
At that point in DB, even the weakest ki attack would be above a standard punch, which is to say, yeah idk if that's exactly a flawless example. Examples do exist but not so sure about that one.
Secondly, a mere 2x gap in DBZ is enough to dust a mf, sending various examples or showings of "hey [attack] did more damage than [not attack]", isnt exactly an argument. Hell if said attack doesnt outright obliterate them we can safely say there isnt even a 2-3x gap based on how DB establishes stomp gaps, it's just how the verse works. Aka, going (wow a kamehameha crippled this dude, so they CAN be exponentially above the base stats", yeah in a normal verse, but DB is special and thinks Mike Tyson would vaporize you with a punch, let alone cripple you, these huge damage showings arent as big of a jump as one would think.
Thirdly, this doesnt tackle the issue of Gohan's kamehameha being anything but notable, and not even using even half his full power too (Which, we actually can conclude, based on the 17 statement saying one's ki would need to be 2x a foe's to nullify it, which is what Gohan's FP did to Cell's kamehameha that was previously overpowering his, it straight up ate it within 1 panel). Which is to say, Gohan absolutely scales to his dogwater 4-B kamehameha, the full power one would scale above him, but even then only twice over at best if we want to be generous, which something tells me we wont do given itd buff buu saga and instead we'd just go "higher".
