Steve Jobs' successor as chief executive of Apple, Tim Cook, quoted Abraham Lincoln last year while addressing students at his alma mater, Auburn University, saying: "I will prepare and some day my chance will come."

Apple COO Tim Cook

That day arrived Wednesday for Cook, He has yet to display any of the showmanship that characterized his predecessor's tenure, and that has left some questioning whether he has the vision or genius necessary to guide the maker of the iPhone to even more success.