>>420508811. It was less popular than it could have been due to the Wii U version, especially since that version was often seen as the better version of the installment by many people. Less popular console by a long shot, but it was one of the main reasons people actually cared to get said console.
2. Even beyond that, the hype behind Ultimate has been insane even compared to previous titles in the Smash series. It helps that the game has gotten tons of praise from all fronts.
3. Super Smash Bros. for Nintendo 3DS came out in October of 2014 (over two years before Pokémon Sun & Moon), while Smash Ultimate only came out back in December of 2018.
