When I first looked at that page, like you I thought "good old FUD". However when looking back again, I'm not sure it is quite that simple.

If we assume for a moment that those test cases aren't just lies and they really do test tricky bits of those standards then that set of pages, complete with interactive test cases, is actually quite a useful thing for the browser community.

Of course the fact that IE9 passes all the tests makes it look very bad. I suspect how it happened is:

- MSFT looked at IE9 to see how well it fared against the standards
- they found some places were it didn't match the standards
- they wrote a bunch of test cases to highlight the places where IE9 failed
- they then fixed a bunch of the cases
- they then released just the tests for the cases that they had fixed

If only they had also released the test cases that they no doubt have that IE9 (and probably some/all of the other browsers) doesn't yet pass.

I'm curious, do Google and Apple make their test suites (or parts of them) public ?