Now, DFC isn't describing the number of units sold. They expect the Japanese companies to retain that lead. Instead, they expect the iPhone/iPod's growth rate to expand while PSP and DSi sales have plateaued. In other words, DFC predicts that the iPhone and iPod touch will be the only portable gaming devices still seeing significant growth by 2014.
It's interesting because Apple has never paid much attention to gaming... until the most recent press event where they went overboard to promote the iPod touch as a gaming platform. I play games on my iPhone and my original PSP and while it's a different experience, they're both enjoyable.
Of the apps you own, how many are games? If you own either a PSP or a DS plus an iPhone/iPod touch, how would you compare the three platforms?