Both synthetic and real-world benchmarks show the opposite [0] [1]. My own experience and unresolved performance bugs that I've filed show the same [2].
I want Firefox to be faster and superior to chrome in every way. Ignoring it's problems won't make them go away and definitely won't make them a priority for the devs.
[0] https://blog.macsales.com/46993-rocket-yard-testing-lab-whic...
[1] https://www.phoronix.com/scan.php?page=article&item=firefox-...
Plus you get the benefit of Firefox not corrupting its session weekly. Losing all your cookies, tabs and history frequently got super annoying.