What statement does NOT accurately describe natural selection?

Notably, the phrase 'survival of the fittest' is a particularly poor choice of Words for describing natural selection, in my opinion. Mainly because, in the perception of the layman, it might be taken to mean that natural selection is a black-and-white phenomenon, always favouring more able variants, and that ability (fitness) is measured in terms of health, strength, intelligence, rather than ability to produce offspring.

A far more accurate phrase would be: differential reproductive success - meaning the difference in numbers of surviving fertile offspring between variants.