I am driving manual transmission cars for decades. Irrespective of whether it is a new or old car, I find the brakes are very sharp if I brake using my left foot in par with when I brake with my right foot in the very same car.
Recently I tried this on an automatic transmission car and found the same. I am not talking about rallying or racing technique where left foot braking is used. I am talking about normal day-to-day commuting low/medium powered cars.
I searched on Internet and on this site and all search results yield only about the left foot braking about rally/race driving only and hence I posted this question here. Being an mechanical engineer, I could not come to a logical conclusion about this phenomenon.