GOW will reach 15M on PS4 only. with PS5 version it should reach 30M
Spiderman will easily reach 10M; and with great promo it has the potential of selling 20M on PS4 only considering it is a well know character.
GOT will most likely reach 10M, but I think it is hard for it to do more than that. Unless it gets hundreds of 10/10 and great promo.