Earlier quoted context omitted.
I thought it was pretty impressive. It is a freakin mobile phone. As for battery usage, is there a reason to assume that Flash sucks more battery than other applications? Why would it (except being interpreted)? I guess 3d apps in general would draw more power than "flat" business apps.
In any discussion of Flash performance, usually someone posts a report of their CPU fan spinning up each time a web page with Flash is running, or a performance meter getting pegged, or the computer's performance notably degrading. So there's reason to suspect that mobile Flash will suck more battery than a native app. It's possible that Flash's movie clip-based object model encourages a "polling" approach to interac…
I don't want to defend Flash, but most Flash apps contain a loop and animations. So it is logical that they consume more CPU time than a static web site.