Result (Vanilla library): 1865060 ops/sec
iPhone 12 mini and Safari
Safari's result is a bit on the low side and I don't know what the explanation is.
But it has always been the case that Firefox was faster than Safari in specific tasks:
Here is a comprehensive and straight to the point article on Speed Test: Chrome vs. Firefox vs. Safari and Which One Is The Fastest!.
detechprof.com
To start off our test, we loaded up Gmail on all three browsers. The results were pretty surprising! Firefox was able to load up Gmail in 3 seconds while Safari took 6 seconds and Chrome took 10 seconds.
Next up was Amazon where Firefox loaded it in 4 seconds compared to 12 seconds for Safari and Chrome.
Lastly, we tested YouTube where Firefox won again with a loading time of 5 seconds while Safari took 11 and Chrome took 15 seconds.
This test showed us that Firefox is surprisingly the fastest at loading pages when compared with Safari or Chrome.
Result (Vanilla library): 13016709 ops/sec
Sony Xperia XZ2 and Firefox Focus
What we can see is that the Sony XZ2 scores very well in the "No Array" test.
Here it scores almost as good as an i3-3240 + GTX 650.
The Sony XZ2 is over 5 years old so this is a good result.