if two people share a classpect then would they have to act if not the same similar in some cases? ex a maid of breath one acts confident/straightforward the another acts detached/ overthinks.

They’d have similar personality quirks to an extent, but there’s different ways to relate to your Aspect and your Class, so two people with the same Classpect could be pretty notable different. Likewise, two people who are pretty similar could be two completely different Classpects. It depends on the specifics.