Yes. Two flats with the same super built up area can have different carpet area because the loading percentage and building design may vary. A project with higher loading allocates more space to common areas such as lifts, corridors, staircases and lobbies, leaving less usable carpet area for the homeowner. https://www.laxmigroup.co/articles/carpet-area-vs-built-up-vs-super-built-up-area-key-differences-explained/