Macworld speakers defend Apple [...] a panel of tech experts Friday tried to assure a Macworld/iWorld audience that a perception of a "doomed" Apple is off base. [...] news about Apple losing half its market value - the stock price has dropped from a record $705.07 per share in September to $453.62 at the close of trading Friday - sends a confusing signal even to Apple fans. Apple has come under scrutiny for releasing features and services that weren't ready, such as the Apple Maps app that turned up faulty directions and left out public transit directions. [...] an audience member asked him how he felt playing a beleaguered Chinese factory worker in a biting skit on "Saturday Night Live." The skit, which skewered complaints about the iPhone 5's design compared with problems of the factory workers who made them, first aired in October and has been widely viewed online. At Macworld, which wraps up Saturday, there are 265 exhibitors displaying headphones, microphones, screen cleaners, productivity tools and about every iPad and iPhone case imaginable. The bow doesn't shoot real arrows, but instead taps the phone screen to hit the target of 35 different existing games.