Can't decide between C3 65in vs B3 77in

The B3 77in is $200 dollar more at BB. I seriously don't know which to get. The tv is primarily for my parents to watch youtube xD, and maybe some netflix/hulu/amazon. And I would use it to game on my Xbox S and Nintendo Switch. I am also contemplating on getting PS5.

Is the extra 12inch worth it over C3's features, like extra brightness and more advanced chip?