You understand starvation can make your wound worse right? I am genuinely surprised I have to teach a 19 year old **** who I assume goes to college how starvation can have an impact on a wound.
During starvation body's energy reserves are depleted which can hinder your ability to deal with wounds as there isn't sufficient energy in your body to keep going. If Sanji had kicked Luffy in that head in that moment where Luffy was starving he would go down as well.
During starvation body's energy reserves are depleted which can hinder your ability to deal with wounds as there isn't sufficient energy in your body to keep going. If Sanji had kicked Luffy in that head in that moment where Luffy was starving he would go down as well.

Luffy was stabbed way worse than Zoro....


And this also confirms he was already starving before taking the gigantic attack from Katakuri....
But did Luffy faint ?....Nope.