What I don't understand is all the people praising HTML5 because it uses less CPU than Flash yet Chrome ends up using 15-20% CPU just to render a simple animation unlike Flash.
Regardless, with HTML5 you have all the benefits of an OSS rendering engine where performance can be improved by individual implementors (eg, Apple improving WebKit on A4/ARM) or groups of developers with similar interests (eg, Google/Apple/other contributors to WebKit for x86). Where as with Adobe's Flash plugin, you're pretty much reduced to hoping or praying that Adobe will fix problems relevant to your interests.
In other words, the performance may suck now in some demos, but the situation is better than relying on Adobe... for some companies anyway.
this, my friend, is why HTML5 is never a competitor to Flash.
Write once, debug everywhere, hell I'll just stick with Flash.
I wouldn't be surprised to see HTML5 outperform equivalent Flash content in a year or so.
the Actionscript VM is open source. I remember there is an LLVM implementation days ago.