Joe Flacco has one of the best winning records in the first years he has been in the league. He might not get the pretty stats but the dude is a beast when it comes to the playoffs which is what really matters in the end. He gets the job done even though half of his receivers suck.
I'm not saying Brady is bad(he is great) but I will take Joe over Brady. http://www.footballdb.com/stats/qb-records.html