New CEO E. Neville Isdell made clear from the start that he sees little wrong at Coca-Cola Co (KO). "The system isn't broken. There's still opportunity for both Coca-Cola and the other brands," said the affable Irish citizen upon his May 4 appointment. But as he digs into the strategic questions about how to reignite growth at Coke, he might want to take a closer look at its first-quarter earnings report.