Wolverine has been through a lot. Mutants had can simulate nuclear explosions, removal of his metal skeleton and in other universes he’s been ripped in two by the hulk. Most experts say that Wolverine’s powers are connected to his brain but I want to know what you think? 
FTO: NERD TALK 
Never an exact 50% split. Even if its down to atoms. The side with over 50% will regen. The other wilts