Pre-interview Rejection from Med (grad entry) International

Rejected pre-interview and when i asked the admissions office for a reason they said my grade (which was the only thing they used to rank students on whether they’d get an interview offer) was not competitive enough.

My undergrad was biomedical sciences at the University of Manchester, UK, with a first class honors grade of 72%.

So are they only accepting extremely high first class marks/ valedictorians for interviews? I’m baffled tbh. Never imagined i’d be rejected pre-interview even with a first class grade from a top 30 university (world). Just makes me question all the hard work n sacrifices i’ve put in for my entire undergrad years (‘: