If PS5 performs in a range from slightly worse (85%) to slightly better (115%) than PS4:
Nov 2020-Nov 2021: 12.2-16.6 mi
2021-2022: 13.4-18.17 mi
2022-2023: 16.8-22.8 mi
Beat PS5 in 2020-2021 is a given, even if PS5 sells about two times the numbers of PS4 I still believe on Switch victory. Switch will likely sell about 30 million in that time (remember 2020's November-December are likely the biggest in Switch lifetime)
Beat 2021-2022 numbers is totally realistic, Swich only need to fall less than 40%, for Switch decline that much in only some months they will need to fall of a cliff like everybody keep saying it's happening soon lol
Beat 2022-2023 numbers is pretty unrealistic. Dedicated hardware usually start peaking on its third or fourth year. PS5 would need to have a sloppy start, like PS3, and sell about only 10 million copes for this happen
