It will be close just like last year. However I expect all 3 consoles to be down compared to 2017, because 2017 was an exceptionally good year for hardware sales. I think PS4 will be the top selling console, but if you are going by company Switch + 3DS will outsell PS4 + Vita. Either way it will be close.
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