In terms of money, both ends of the equation is not a good position to be in. If what you love to do will return a pay that you could barely live off, then it wouldn't be enjoyable. Similarly regardless of how much you earn, if you don't even have time to use it, it just becomes a pile of useless plastic (or magnetic fields, in terms of electronic).
The survey presents a statistical synopsis on graduate salaries. It is clear in what kind of information it contains, and more importantly, doesn't contain. How the data is used is up to the end user. Obviously incorrect analysis of the data would result in misleading information.
A certain job might earn a lot, but if places are so limited it's almost impossible to get in then it is largely irrelevant. Also, if a career does not provide stable employment then the extra starting salary might not compensate for that (both in financial and psychological terms).
In the end, the data is pretty clear. Use as you see fit.