This report is going to be the Holy Grail for many intellectually snobby students. However, if you have any sense (and wish to make a judgement) you should firstly, read the report in full yourself. And secondly, realise, as White Redrose says, the distinction between arts degrees and science degrees.
There are many discrepancies within the report, such as measuring ability on UCAS points. Which we know has a lot to do with school background and social status rather than ability.
I think this report should be approached with caution.