In the last decade cars have progressively increased the gear from 6 all the way up to 10 speed in automatic transmission. Manuals in the same period however have retained more or less the same 6 speed with occasional 7 speed (C7 Vette, Bronco, etc). Why such a huge discrepencies?
An automatic knows* which of the 10 gears best suits you for how much throttle you’re using. The average driver would constantly be putting it in a gear that works, but is not ideal.
*typically