I never did any tests. I did replace my battery a month ago before all this came out about the throttling. I never noticed a difference before or after I put a new battery in. The phons has always been fast and dependable.
Someone mentioned that the phone throttles based on cycle counts so it's possible that my old battery may not have had a high enough cycle count. I think it was at about 230 charge cycles after two years. I replaced the battery because it's capacity was at 70% and would have random drops where it the battery % would go from about 70% to about 16% while sitting in my pocket the whole night with no usage. Many times, it would take my watches battery with it.