[eek04_]

The better candidate is spending more on the evaluation.

E.g, for my company's twice-yearly evaluation, everybody writes up a short report on the most impactful stuff they've done including evidence, this is evaluated by their manager to give a score, and then there's a series of group meetings between managers to make sure that the scores are calibrated, including looking at all types of metrics that can be dug up and comparing to our written role descriptions for different levels. It takes a lot of time but creates fair scores.

This is extremely labor intensive, but that's the thing: To create anything resembling fair evaluation of a large group of people that do a large set of different things, you need to do things that are labor intensive. Using a simple set of metrics don't cut it.