Oh, sure. These are not problems unique to html5test.com. Pretty much anything that claims to boil down the quality of a browser or rendering engine to a single number will suffer from problems #1 and #2. As for #3 and #4, writing a test not susceptible to gaming is _hard_, and bugs happen.

It's just that people like to forget all this and treat the numbers they get as revelation from on high. Sort of cargo-cult quality measurement.