Apple's (NASDAQ: AAPL) market share in tablets last quarter was 55%, a number most would consider very strong. But when you take into consideration that this represents a 14% decline year over year, and that it was only 2010 when Apple literally invented this market and held 87% of the market in Q3 of that year, you start to notice a trend: Google's (NASDAQ: GOOG) Android-powered devices are catching up. And it may not be long before they surpass Apple devices, and hold the lion's share of the market for themselves.

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