I'd place him at old Piccolo Daimao's level, which I think it's fair enough. He is noticeably weaker than Kuririn and Yamcha but the fact that Yamcha considered landing Ten a hand when Tao used a weapon and their reaction to his Super Dodonpa implies the difference wasn't that big, and if Kuririn and Yamcha are within the old -- young Piccolo gap, keeping Cyborg Tao at old Piccolo's level seems fair to me.