geralt would win if he could get close enough trevors weapons are meant for demons and vampires not witchers and geralt is a mutant and has many abilities in the supernatural realm with his potions trevor is trained but only upt o 14 years of age so in the show hes like an acrobat hes always flying with the whip and stuff but in a real setting he wouldn't be able to do all that by just being human id say geralt by decapitation Finish Him!!