I agree with you, but another Bobby(junior) in the current section pointed to me that Connors played a lot of smaller tournaments AND less slams per years. Playing a lot of smaller event can really help to increase the winning percentage, as even in an old age, a player of this caliber with the dedication to win can do it. Obviously the AO didn't had a strong field at the moment and even if he had played it, the argument could be made (weak field). Still, it is probably true that he played a lot of tournaments without facing the top guys. Trivia: more than 10% of Connors's defeat were given by Borg or Mac.