I don't know how to unlock "Super Cup". But this mode exists and is officially in the game (the intro text speaks of an official event)

I have therefore added this as a level. As there are already existing runs in the "All Cups" category, I have excluded "Super Cup" from this. Super Cup is therefore only available as a level.

I have also added the category "All Tracks". This includes Super Cup! However, the tracks can be driven in Cup mode or without Cup mode. (Please add up the in-game timers)