Warren Buffett on Saturday defended his recent controversial vote on executive pay at Coca-Cola Co (KO) and disappointing performance at railroad BNSF, as investors grilled him on his Berkshire Hathaway Inc (BRK-A) (BRKb.N) conglomerate at its annual shareholder meeting. The investment guru was peppered with questions at the meeting, part of a mostly festive weekend that Buffett calls “Woodstock for Capitalists,” following concerns that Berkshire last year missed Buffett’s five-year growth target for the first time in his 49 years at the helm.