how did you exclude raw converter + whatever camera profile was used here (that is not to say that they certainly have different CFA properties) ?
I'm not "excluding" profiles, these are the published images, with whatever real-life tools have been employed by this reviewer.
Presumably, these are the colors *users* will be getting.
Each camera has strong points and weaker ones; the Sony has a zillion ISO, 40MP resolution, 4K video, a 5 axis stabiliser, a light portable body, and a good price point. Let us give the more expensive, large, heavy and conservative Pentax its due, *in these pictures* it shows better color discrimination in the greens, giving more depth to the forest. Possibly a better lens or a different Raw processor on either camera would change that. There is also probably Jpeg on both, to set a baseline.
Give Michael his due, he publishes honest real-life comparison pictures; it is up to us to each of us decide what we see in them.
And by the way, as you know, I was an ICC member, and a consultant to Xrite, so I am familiar wiith profiles.
Edmund
PS. I wish Michael posted the raws or at least Jpegs somewhere.