Thanks Klaus for this great article (long overdue!).
It's well written even if some equivalent lenses don't fully compare. Globally, the comparison remains valid.
One thing that might be interesting would be to show some equivalent lenses purely from a focal point of view, not taking equiv. DOF in account. For instance, the Oly 9-18 f4-5.6 and the Pany 12-32 f3.5-5.6 are incredibly minuscule compared to (focal) equivalent lenses in larger sensors systems. Although the equiv. DOF is not comparable, in this specific case it's not of much relevance while the size benefit is huge. This applies to many lenses though.
It's well written even if some equivalent lenses don't fully compare. Globally, the comparison remains valid.
One thing that might be interesting would be to show some equivalent lenses purely from a focal point of view, not taking equiv. DOF in account. For instance, the Oly 9-18 f4-5.6 and the Pany 12-32 f3.5-5.6 are incredibly minuscule compared to (focal) equivalent lenses in larger sensors systems. Although the equiv. DOF is not comparable, in this specific case it's not of much relevance while the size benefit is huge. This applies to many lenses though.