Correct Reflection Color for Metals?

[viktor_fejes]

Hi, I'm trying to find the correct reflection values for metals. I know about the article Understanding Metalness and it's great but it seems to be in conflict with this table in the docs.

The following sentence from the above mentioned article makes sense to me:

The Reflection should be set to white so as to get the proper reflectivity and preservation of energy; without this, the glancing angle will never be 100% reflective — which it should be.

but the other table seems to be more up-to-date. Which one is correct? Or more correct?