Mario Kart 8 D will definitely outsell Smash. However I expect Mario Kart to sell 40m-50m. Therefore it's possible for Smash to still do 25m+
curl-6 bet me that PS5 + X|S sales would reach 56m before year end 2023 and he was right.
My Bet With curl-6
My Threads:
Master Thread, Game of the Year/Decade
Switch Will Be #1 All Time
Zelda Will Outsell Mario (Achieved)
How Much Will MH Rise sell?
My Bet With Metallox