The whole system is unfair and a farce! Nearly everyone agrees that degrees from some universities are better than others, but nobody knows how great the differences are!
Then you get places like Exeter that probably have a better reputation than they deserve with employers, to confuse matters further, and people doing different subjects which vary in difficulty, and others who are able to 'cheat' their way to a good degree (by choosing a language for example when they are already bilingual - i know someone doing this at oxford).