Firefox 73 + Firefox 74 Beta Benchmarks On Ubuntu Linux
Firefox 73 (and 74 beta) were performing slightly better with Basemark but certainly no match to Google Chrome.
JetStream was close between Firefox 72 and Chrome 80 while now has pulled slightly ahead with Firefox 73.
But under the newer Jetstream 2.0 benchmark, Chrome 80 wins by a wide margin.
Firefox's WebRender helps slightly with CanvasMark.