@ OnTheBenchOfDoom, Whatever was actually said by that academic, it is not worth speculating. But the reality is clear on particular academic interests or learning style.
It’s the degree course which has the flexibility to accommodate a student’s particular specialist interests and not any college. They all rely, for all degree subjects, on many specialist academics at all of the other 30 colleges. And these interests will evolve or even change. They really are not predictable. So it would be daft to select students on this basis in any event. (My daughter had a close friend on her course at her college. They chose two completely different specialisms and ended up spending a lot of time with senior professors at 4 different colleges. Their own college played no part in these modules. Both these students came from the winter pool.)
Learning style? No one can diagnose a nervous candidate’s individual, composite learning style in two twenty-minute interviews. It is for the candidate to develop this self-awareness and study accordingly. But most successful undergraduates have these qualities in common: they are bright; they become smart, adaptable learners; they are driven; they work hard; they are good at learning mainly from books and/or problem sheets, sitting by themselves at a desk. And this is irrespective of the college at which they are based.