Sanji endure it, didnt have anything with gens
whats that gotta do with sanji enduring that attack?
Yes it has
Sanji looked more shocked with the cracking bone against vergo.
His bones were already malleable.
In the next panel when queen hit him with the sword, his face was damaged but his reaction was like nothing happened.
Sanji was not the sanji we knew at this point and on.
Those moments happened after his pu and for the sole purpose to understand the changes in sanji's body, nothing to do with endurance.