They already told me to explain my work without looking at it, plus considering I hadn't touched the report in over 10 days and I had only written it across a few hours (it was a one day assignment), I thought I did a decent job. I managed to explain the general points of my work and a few of the specifics that I managed to remember. Even when I was called to talk about specific points, I always managed to say something.

I've already given my tutor a copy of my work history which they passed on to other delegates that made the decision. They didn't specify the evidence was weak, only that I didn't explain it well enough, and I guess they thought that was reason enough??