Thanks for sharing that link, 7Soul - it's a very useful overview of the HTML5 development scene as it currently stands (or rather, accelerates). Good that he mentions the developing Gamepad API - that will be a real step up. His survey of the (depressingly large and varied) range of target platforms is particularly good.
I'm not sure, though, that I'd go along with his conclusion that "if you are only worried about the Desktop market ... you should probably question the use of HTML5 in the first place and still consider Flash". In the first place, I think that no game developer now should be "only worried about the Desktop market", and secondly, I think that even there, the HTML5/Flash balance is changing so rapidly that a Flash-only developer risks getting left behind in the dust.