Again, this is partly to do with TSR's users being very young and having a concept of reputation that goes back just a few years. St Andrews is a prime example of this- it doesn't matter if for research or teaching others scored higher, if they turnover much more money or are much better represented in academia or graduate schemes- all it takes is a few top 5s in a league table and people are banging on about it being 'tiers' above Liverpool, Nottingham etc. I've seen absolutely nothing that St Andrews does that Aberdeen doesn't, save for being much more fashionable amongst the upper middle class in the last decade or so and thus much harder to get an offer. They have virtually identical marking schemes and exams that are almost word-for-word the same in places. I've never heard of St Andrews graduates getting jobs over others like Liverpool or Aberdeen either purely on name alone (again, if someone can provide statistics otherwise I'll withdraw that statement), yet on TSR the league table and prestige fanboys arrive and proclaim that UCL, Durham, Warwick, St Andrews, Exeter are 'better' than Nottingham, Sheffield, Manchester, KCL etc. Five-ten years ago you'd get a different answer, and in five-ten years time when some of you might still be in education that might not be the case either, so arguing over what some schoolkids reckon is held in higher esteem among other schoolkids that have never been to university let alone tried to use their degree is pointless.
For what it's worth, my experience has been that employers go out of their way to go to Oxford, Cambridge and some graduates of some courses elsewhere. They might also 'target' big places near London or perhaps even in Edinburgh, given its position as Europes second or third main financial centre. Targetting usually just means sending a guy up with a stall and some flyers though, and Scotland's largest graduate fair isn't actually in a university- rather it's at the SECC and ran by three universities, so I doubt it'd appear on any 'targetting' stats. Anyway, as reputation goes, the next chunk below Oxford/Cambridge and your economics graduates at LSE, are, for the overwhelming majority of graduate jobs, the same. This tends to upset prospective UCL or Bristol students, who won't have any of this idea that they'll get a tick in the box before interview exactly the same as Liverpool or Queen's Belfast, even if one is fifth in a table and one 35th. But from what I've seen, that's the way it works- even the employers looking for graduates of a 'redbrick' (I can only guess they have no idea what it means) band all of them in together and then go on the interview. These places all teach hundreds of degrees, have thousands of staff, a high proportion of the top students in their area, and turn over hundreds of millions of pounds because those with the money back them- the idea that some are in 'tiers' above others is a fantasy.