Martin's last 4 years at Richmond are a good example, given he did not exactly retire at an ancient age.and yet Martin only got 1 AA in a team that finished outside the 8, so around 14% of the seasons he finished outside the 8.
He got 3 of his AA's in teams inside the 8, from memory over 35% of the time Richmond finished inside the 8 Martin got an AA.
There seems to be quite a bit of evidence that in bad teams Martin is not as good.
Dusty 1.74 coaches votes per game 2021-2024 when Richmond were no longer dominant. Aged 30-33.
Ablett 3.55 coaches votes per game 2014-2017 when GC were a non finalist team. Aged 30-33.
Roughly twice as good in early 30s when in non dominant sides.
Dusty then retired at the point where Ablett went on and played 3 more decent seasons for Geelong.