Probably only me - but to my mind that's a shame. It's only my opinion, but I think Flash is nuts for anything new except video at the moment. I think Flash is:

- slow

- fairly unstable, even on Windows

- a privacy nightmare (cookie system)

- being left behind by browser vendors, where there is competition

Excanvas on IE and the canvas tag are really well placed for visualisations like these. I built a donut chart in Canvas recently for something I'm working on, and I'm glad I did, because I was able to do an impromptu demo with someone just the other day on my phone.

I know it's not a critical piece of engineering, and it doesn't actually matter, but I do personally find Flash dulls my enthusiasm for otherwise very nice things!