Quite a few good posters here who recognize Tito's strengths are mainly interpersonal: great with the players and the media, mediocre in game management. The one positive in the latter case is the way he uses the whole team. Doc Rivers of the Celtics could take some lessons from him on that account.
Tito has an advantage, like Girardi, of having a wealth of talent to handle. Which is why he will never win MOY. Girardi won't either.
Tito's main weakness, in my view, is his handling of pitching. This dates back to his days managing the Phillies, where he allowed Schilling to throw 145 pitches routinely. And Curt routinely got bombed after about 120 pitches. Schilling had to have a shoulder operation after a season of that. And Tito lost his job. With the Red Sox, he seems to have swung the pendulum in the other direction: too much bullpen, not enough starting pitcher. The result is Epstein goes out and gets a new bullpen every year or so. But then his overmanagement of pitching seems to be the norm in Baseball these days. Starters aren't used much beyond the mid-innings anymore. But then why are they so highly paid? The use of 3-4 relief pitchers every game--win or lose, one per inning--does tend to wear out a bullpen. We'll see what Curt Young, the new pitching coach, will do to this routine--coming from a pitching oriented team.