Dodgers get immediate 3B upgrade
The switch-hitter crushes right-handers, can play third, second or short in a pinch, and has slightly above-average power to all fields. He's a significant improvement over Willy Aybar, who is three years younger but has stagnated at the plate since he was signed at age 16 in 1999. For the Dodgers, this amounts to trading Edwin Jackson, Chuck Tiffany and Aybar for Betemit, and that's a clear win.
In exchange for Betemit, the Braves get Baez, who like Bob Wickman is known more for his save totals than his ability to miss bats. Baez has a solid-average fastball but no real out pitch, and only this year has he shown even average control.