Pretty bad. In fact, if you’re thinking video, utterly unusable.
Kevin Tofel of GigaOm and JKOnTheRun is someone who isn’t a dyed in the wool iPhone or Apple fan. In fact, he replaced his iPhone with a Nexus One in January (a process that I’ve recently gone through, more of which anon). And that’s why this video over on NewTeeVee of his experience with Flash video should be required watching for anyone who thinks Flash on mobile is a reality, today.
What does this demonstrate? Simply that the idea that Apple could simply magically put Flash on the iPad (which runs a processor in the same class as the Nexus One) is fantasy. Ignoring the broader reasons for Apple wanting to keep Flash off its platform, it’s clear that Flash is simply too processor-intensive to work properly on mobile-class processors as currently specified.