Gandalf hypothetically defeats Rincewind in a wizard battle? Think carefully first, then make a decision:
Gandalf is a 2000 plus year old wizard that has fought orcs and spirits in Middle Earth. Rincewind is the protagonist of the Discworld series. Rincewind is a failed student at the Unseen University for wizards in Ankh-Morpork. Rincewind is described by other wizards as the magical equivalent to the number zero. So, the answer is yes.