Game needs a baddie though.
Ganonser.
Only Linkio can defeat Ganonser, obviously. Bowser is overpowered enough breathing fire, Ganon has magic and fireball spells with a master sword. The main physical difference from Bowser is having Ganon's right arm, otherwise he can't grip the master sword with a dextrous opposable thumb for using his swordsmanship skill properly and needs the extra digits that fit his magic rings. It's Ganon using magic to transform into Bowser. Mario uses magic suits to transform into frogs, tanuki and various other forms and it's a Link suit. The main non-physical difference from Bowser is the laugh.