This actually means that Apple's stock price is more scrutinized from now on. When you're at the top (at least in a sector) it's hard to find momentum to gain more ground. Microsoft has been flatlined for years. Let's hope the same doesn't happen to AAPL.
Microsoft has flatlined because they haven't done anything of any significance. Microsoft has just been milking Windows and Office for all it's worth because that's their big money maker.
Apple has been creating new ways to generate revenue with new products, something Microsoft hasn't really done.