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Firefox Finally Outperforming Google Chrome In SunSpider
(www.phoronix.com)
A place to discuss the news and latest developments on the open-source browser Firefox
And weirdly, Safari of all things kicks Firefox’s and Chromes ass at SunSpider and JetStream, and by a very wide margin.
https://arewefastyet.com/mac/benchmarks/overview?numDays=60
I wouldn't say that's weird on the contrary it is really expected. Safari is only available on Mac machines. So it is optimized better.
Probably because it's much smaller with less "bloat". No addon support, much smaller, proprietary, no advanced settings (or any at all). Just Webkit with a search bar. (So basically just bullshit).