According to Canalys, Android holds 53% market share of the whole tablet sector, but in comparison with Apple, it still lacks the amount of tablet-optimized apps available in its competitors store. The turnover in Apple Store still makes it the most profitable vendor and it seems it will stay that way for quite a while.
Report by Strategy Analiytics takes an OS based look. The report shows that, regardless of the mobile device type, Google dominates the market with Android jumping another 10% since last year and reaching almost 80%. The increase came at the expense of Apple and smaller rivals like Blackberry and Nokia. Microsoft noticed only a slight increase by 0.3% as compared to the last year.
Sources:
http://www.canalys.com/newsroom/small-tablets-drive-big-share-gains-android
http://www.strategyanalytics.com/default.aspx?mod=reportabstractviewer&a0=8791