Full Idea
The advantage of Rawls's method is that the principles the individual chooses are not only fair according to some abstract principle of benevolence, but also the result of rational choice.
Gist of Idea
The principles Rawls arrives at do not just conform to benevolence, but also result from choices
Source
Johanna Oksala (Political Philosophy: all that matters [2013], Ch.5)
Book Reference
Oksala,Johanna: 'Political Philosophy' [Hodder and Stoughton 2013], p.66
A Reaction
That is a very nice way of putting the beauty of Rawls's idea. In modern political philosophy you hear far more criticisms of Rawls than praise. If a philosopher is criticised a lot, it is probably because they have stated their views clearly.