Love him or hate him, Steve was right.
Performance is either garbage or it kills your battery, or both.
I have neither of those issues on my G2, which mind you, is not the fastest Android device.
Flash is *not* a uniform experience across all devices. This is the main problem.
Neither is any application on any device. But most of the latest Android phones have no problem whatsoever running Flash, and I've never noticed any real battery drain increase.
Jobs doesn't want Flash on Apple phones and iPads simply because Flash is a content delivery system. I figured most of you knew this, but I guess not. Apple wants to completely control what you install and run on your iPad.