Speclenium has come of age…
It is now possible to extract pretty interesting comparisons of browser accessibility API implementations.
Here are a two comparisons between Firefox nightly builds, and Internet Explorer 8 beta 2.
The comparison view only works on Firefox, I do not dare try it on anything else.
Here is comparison of the browser chrome between Firefox 3.0.4 and Firefox nightly.
I hope you have as much fun comparing as I did!