... How does weight translate to energy? Force.
Oh yeah, it's AP. His staff in the third key is 6-A+, Luffy can nerf it by making it rubber, thus he can take the force behind it. It doesn't make sense to claim the weight will harm Luffy if the weapon's own strength can't accomplish that!
"Oh yeah, that full swing did virtually nothing to you, but if it falls onto you, you gonna get hurt"
Doodoo argument.
Also, Internal Destruction, Luffy can just bypass the staff's durability.
Because the area of his body would increase several thousand fold and the overall impact of the weight is wider spread?
I know you don't know how to math but... Bro, know how to math.
... And?
Why do you think saying "He has dealt with it before" is a proper counter?
How? How does he deal with a guy literally seeing several seconds ahead and know exactly how he is going to dodge something through future sight? The speed is equalized, and gatling is far faster than Luffy's base speed.