Even with the Masters (though it should be the one in January of the next year that reflects the "true" ranking of the previous year in retrospect), I don't think it's particularly close. While Connors won some big titles in '78, he also won some titles that aren't particularly impressive (e.g. Memphis, Birmingham, Stowe).
"I can cry like Roger, itís just a shame I canít play like him." - Andy Murray