@Sereques:
At least we see Zoro and Luffy getting wrapped up in bandages, and we see chopper yelling at Zoro not to take them off. The few instances we have seen bandage on Sanji was electrocution from Eneru and the slash from Mingo. This is the same guy that got his bones broken by Gin, Pearl, Mr 2 and lately Vergo.
@Sereques:
Sigh! I'm talking about recovery time. Other SHs, get treated for it. I'm still waiting for the bandages on Sanji after getting his BONES broken by Pearl & Gin, Mr2 back in Alabasta and Vergo.
Gin and Pearl: No doctor around
Mr. 2: Sanji was wrapped in bandages
Vergo: Sanji didn't tell anyone he was injured
It's looking like he is leaning towards already being superhuman. Maybe like Jajji said that Sanji just will have to work much harder than his siblings to "activate" his genes…but Jajji was impatient. Perhaps when Sanji defeats his family as a "normal human" that his latent genes will activate. That way he overcomes his family being a normal human maintaining that theme, then power ups sometime after the fights, probably while he is healing, before the Wano arc.
Maybe Oda will use a liquid filled chamber on Sanji similar to Goku before fighting Freeza. Homage while powerup.
*Sanji also hurt his leg while kicking Kuma on Thriller Bark. Not sure if broken but it looked painful. Makes sense comparing that situation to him with Vergo about hard as metal/steel theme that Sanji will surely overcome....be it haki, his genes, or both.