the Wired "benchmark" isn't really a benchmark
joelonsoftware.com/...
This was rushed
it's a Beta
These are not core features, they are extras
You must be referring to add-ins, which are specific to Firefox and are popular with advanced users. Most people can surf the web quite we with out them.
It's real-world testing. Benchmarks test abstracts great but when the results show a complete reversal when using a real, widely used application, you have to question the validity of the benchmark.
I'm not saying it's wrong that OSX uses that font model but it should stay on OSX. Making Windows users use it isn't cool.
"It's not, it's junk. It's a rush-job to try and tempt people into developing for a massively expensive, untested and unproven product: the iPhone. There's no merit for it as a real desktop browser.
Similarly, some of the content enhancing plug-ins like AdBlock or SiteAdvisor make life for every user so much nicer... I wasn't just talking about devel plugins.