DC is in Year 12 so we're looking at universities. His predicted grades are likely to be A*'s and A's so he is aiming high. All the universities on his current shortlist are Russell Group, with aspirational entrance requirements, but some are 'ranked' more highly than others in the league tables, and the one he favours the most is ranked the lowest - e.g. 201-250 in the QS world subject rankings and 35 in the Guardian subject rankings. But he favours it because it is one of the best places to go for his sport, which is very important to him.
It seems to me that the university rankings are weighted towards research rather than teaching, so AIBU to think they're not worth paying much attention to at first degree level? If he later wants to do a postgraduate research degree somewhere more prestigious then he can move when he graduates. But if he goes straight into employment, I do wonder if there are many recruiters who only focus on graduates from the top tier institutions. That would have been true in the past, but how about now?