>>280823205
>Goku trained under Kami and was sub-Saibaman afterwards
>The Earthlings trained under Kami and surpassed the Saibamen
>this means the Earthlings made far better gains than Goku did under the same teacher
>Kaio-sama stated that each of the Earthlings made it to Kaio's far faster than Goku did
>each of them could withstand the gravity way better than Goku did, despite Goku being born on Planet Vegeta
>Kaio stated that they asked for tougher training than Goku received on top of that
The Earthlings have already verifiably proven that they can make better gains than a low-class Saiyan. It's not in the realm of possibility that they can reach Ginyu Force level from Kaio's training; they were already way stronger than Goku was when he arrived there.

Gokek is just a weak bitch who abuses his Saiyan biology (zenkais) to get stronger.