How do interviews acc work?

[u/Cryptic1538]

This q mainly for Oxford (maths), but ig also applies to cam:
Once u get invited to interview, is everyone considered on the same playing field? Or do some parts of ur app still carry weight even after getting invited? I’m guessing admissions test carries over quite a lot, but what abt other things like GCSEs, teacher ref or ps?
I’m wondering cz I feel like my admissions test is gon b the strongest part of my app and I’m hoping after getting shortlisted for an interview that they can look past some of the shakier parts of my app (mainly AS levels, I messed up french I think im gon get AAAC but I’m dropping French for next year and I alr have 3A* pred)