I think it's the most reliable but also it's the most transparent about its elemental scores, so, as I have done in the screenshot above, you can add and remove variables. International placement might not matter to you much, for example, but percentage employed might be more important than final salary for risk averse applicants. That allows you to focus on variables that most matter for you.
PS The other thing I like about the FT is the tough love approach of removing schools with below 30 responses. Such data would too volatile to give a guide to applicants who wanted a reliable guide.
[Edited by Duncan on Feb 24, 2016]
I think it's the most reliable but also it's the most transparent about its elemental scores, so, as I have done in the screenshot above, you can add and remove variables. International placement might not matter to you much, for example, but percentage employed might be more important than final salary for risk averse applicants. That allows you to focus on variables that most matter for you.
PS The other thing I like about the FT is the tough love approach of removing schools with below 30 responses. Such data would too volatile to give a guide to applicants who wanted a reliable guide.