The global battle for smartphone supremacy between Apple (AAPL 0.53%) and Samsung has been well documented. They're the two strongest names in the huge growth market, though Samsung recently pulled ahead of Apple in one key area. What does this mean for the balance of power between the two, and what does it say for other companies in this space? Can anyone stop Samsung as it continues its impressive run in the smartphone space? In the video below, Fool contributor Andrew Tonner breaks it down for investors.