Your post is, to say the least, misleading, @bumbaloo.
The Legal 500 carries out a lot of research before producing its guides, and it goes to other professionals and lawyers' clients for the purpose. For barristers, they go in part to solicitors who instruct them. It really isn't "just" a database. It ranks a lot of lawyers because it covers a large number of practice areas and the whole country. However, in each practice area it only ranks a small number of barristers.
At the London Bar, Amal Clooney is ranked as a Leading Junior both in International human rights andcriminal law, and in Public international law. "Junior" simply means she's not a KC She comes in at level 1 in their rankings, at which level they only cite 7 barristers.
In the Chambers guide, which is arguably more stringent, she is in Band 1 one of only 11 barristers in International Human Rights Law, Band 2 in Public International Law; in International Criminal Law she is in as Spotlight.
She is also a Professor of Practice in International Law at Oxford, and an Honorary Fellow.
If you were consistently ranked in the top tier in your field of work, I think you'd be entitled to be regarded with a hell of a lot of respect. As is she.