Where would the Mavericks be had Dirk not missed the first 28 games of the 2012-13 season -- almost exactly a third of the year at 34%.
Obviously, even being back it's still been a struggle to get back to the level he's accustom to. There's also been problems with his teammates adjusting to each other and to Dirk.
Currently, the Mavericks are sitting at a 21-28 record. Wins come at a premium, especially against the elite teams in the NBA. Of course, you'd have to think an 11-time All-Star would have some sort of effect on that, regardless of how healthy he was.
What have you, Mavericks nation? What kind of difference would Dirk have made?