Michael Bloomberg is definitely a better bowler than Barack Obama. The mayor invited all of his commissioners to Brooklyn Bowl in Williamsburg Monday night and showed decent skill on the lanes. “He was consistently breaking 100 over the course of three hours,” says a spy. “Not great, but not bad.” Obama infamously rolled a 37 while on the campaign trail in Pennsylvania in 2008. Also there were NYPD Commis sioner Ray Kelly (who topped out at 106), Education Chancel lor Joel Klein, and FDNY Commish Sal Cassano, who rolled a 126.