Hoping to rebound from their loss to the Ravens the Dolphins played on home ground for an AFC duel with the Titans. In the first quarter the Dolphins took the lead as RB Ronnie Brown got a 2-yard TD run. The Titans replied with RB Chris Johnson getting a 17-yard TD run. They fell behind after kicker Rob Bironas nailed a 40-yard field goal. They eventually took the lead after kicker Dan Carpenter made a 23 and a 26-yard field goal, which was soon followed by QB Chad Henne completing a 13-yard TD pass to RB Patrick Cobbs. The Titans replied with QB Vince Young completing a 14-yard TD pass to WR Nate Washington, but the Dolphins continued to score after Carpenter got a 42-yard field goal, followed by QB Tyler Thigpen making a 9-yard TD pass to TE Anthony Fasano (With a failed 2-point conversion). Then FS Reshad Jones intercepted a pass in the end zone for a touchback.
Question: How many more field goals did Carpenter make than Bironas?
Answer: 2