Exactly my point. Since the implementation details of HTML, CSS, and ECMAScript are different between browsers and browser versions, the existing requirements indicated that many browsers should work when in reality they might not.
I'd also go further to say that end useers shouldn't be expected to know the capabilities of their browser. At least in my case, it boils down to "worked for me" and "crap, I have to load Firefox?" and "OMG, I need to find a windows machine?". :-)
Technical specs would indeed be good for documentation to browser vendors, but end users, admins even, just want to know what browsers will likely work. Given we're a free project, "supported" might be an overstatement.
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