Coca-Cola has been an underwhelming investment over the past decade, when compared to the S&P 500.When billionaire investor Warren Buffett makes a move, investors take notice, with many of them mimicking his decisions and buying and selling the same stocks. He has generated massive wealth over the years due to his investing acumen and his long-term buy-and-hold strategy.But that doesn't mean every stock in the Berkshire Hathaway portfolio has necessarily been a great market-beating investment. In many cases ...