At the time of its release, the manner on how it they’d marketed that was confusing as they showcased the Wii U gamepad as if its a portable console (its not) since its rather the main controller for the Wii U console. I was in high school when the console was first revealed, my reaction to that was “WTF?” as I thought the gamepad was portable, as the ads often flex that it can be (or the way they showed it came off as that).
Basically way larger audience. The big thing in gaming around 2005-ish is that everyone is a potential gamer, including people who mostly don’t care about or are not used to specific console releases.
Also I’d argue a “Super” is a clearer mark of upgrade than a single, very random letter or number (that is specifically not used like a version number like “GameMachine 4” but instead a weird portmanteau).
Also counterpoint : Nintendo of America used a lot of marketing to try and make people stop calling consoles “a Nintendo”, and part of this was the lack of distinction between NES and SNES (the other part was confusion with the competition).