The slide of AAPL is because of the Wall Street confidence to the future of the company. There is at least 1 fact to support the dim forecast - Apple cuts its LCD order for iPhone 5 by half. AAPL likely continue to slide a bit more until a more promising products are released to the market. It might be a bigger screen iPhone or a smaller screen and better resolution iPad. Market will tell.
Market share is very important. Yet, nothing is more important than profit. According to the news shared by eewiz , I don't think Samsung is doing better than Apple.
And yet AAPL continues to slide. daleste, the reasons for Motorola's & Nokia's market share decline are well known. If Apple & Samsung were to fall to the "Others" category, who would be replacing them at the top of the list, and why?
If I recall Samsung had more market share than apple for the US market for entire 2012, apple just for Q4. Apple may have won the battle of Q4, but lost the war of 2012.
It's odd to me to have a market share story and just cover Q4 results without acknowledging the full year results.