Firefox 77 / 78 Beta vs. Chrome 83 Linux Browser Benchmarks
With the Basemark browser test, Chrome 83 is around 56% faster than Firefox 77.
Under the previous-generation JetStream benchmark, the cross-browser performance is similar...
But when moving to the new JetStream 2.0 test, Chrome was running about 33% faster.
Firefox did come out ahead of Firefox for the CanvasMark test.
Firefox was also faster than Chrome for StyleBench.