The fairest way is for each contestant to receive a set number of questions ( say 20 ) in both rounds. If there is a tie, then go the tie-break as now. I can't really believe that all the contestants received the same number of questions as the winner was the last person to answer questions in the final round and still won by more than the number of questions the runner-up received taking into account the number of correct answers, passes and incorrect answers they both received.