Even then I would argue that it depends what subject areas you're comparing. If you want to do biotechnology then Imperial's more prestigious, but if you're looking to do law or English, I'd say QMUL's just as good as KCL or the LSE (I think the league tables back me up on this one, if you care about that kind of thing). I don't think an association with QM (as an institution) is seen as a drawback, I think a certain amount of resentment stems from those times where QM has attempted, for corporate reasons, to ride on BL's coat tails, or conversely hasn't paid enough respect to BL's history...rather than QM's position in the league tables.