There's no magic formula. Winning is a combination of run scoring and run prevention. The favored team is going to be the one with the best net combination of pitching, defense, and offense. That principle doesn't change in October; if anything, the comparative quality of each becomes less important in the postseason because in a short series anything can happen. If the Cubs fielded a team with top notch offense and shut down defense and were able to make the playoffs with a rotation full of Kyle Hendricks' who will keep you in most games but rarely be absolutely dominant, I'd have no reason to believe they wouldn't have as much of a chance in the playoffs as anyone. That said, any team that's good enough to contend is probably going to have at least league average pitching. But a rotation jam packed with aces isn't necessary for a successful playoff run. If we are talking about pitchers of Hendricks talent level I agree. However I do believe in pitcher variety. I wouldn't want to throw 3 RH in a row that all threw 90 MPH.