Justin Edmonds/Getty ImagesChad Billingsley has been unable to keep his ERA below 4.00 this season.In an early scene of the underappreciated classic "Joe vs. the Volcano," Mr. Waturi (Dan Hedaya) is on the phone repeating to an unseen caller, "I know he can get the job, but can he do the job?"The different answers to that question, when it's asked of Dodger starting pitcher Chad Billingsley, are helping rebuild his case as the Dodgers' MPP: Most Polarizing Player.One thing to realize is that Billingsley, while not a staff leader, remains 25th in the National League in Wins Above Replacement as well as Fielding Independent ERA in 2011, according to Fangraphs. To be the 25th-best pitcher in a 16-team league, simple math tells us, is to fit right in as a solid No. 2 starter relative t