In my experience and limited testing, even with warmed-up caches, Chrome (without Adblocker) was faster than Firefox (with or without Adblocker), sadly.

I still use Firefox due to the security benefits of ad blocking, but I don't find the experience particularly enjoyable (although, thinking of it, it may have either significantly improved in the past ~half a year, or I just don't notice because of a more powerful CPU in my new phone).