Do you have a grey card or an incident light meter? as both would vary in readings depending on whether they are in the shadow or the light, grey cards also vary depending on how they are tilted, even colour temp is subjective.
My POV is that one should know one’s equipment and make a choice to expose for effect, or in Ansel Adam’s terms, expose to get the best negative possible to produce a print (digital or film), which is the same as shooting a portrait in shadow and exposing to blow the background out or shooting one in sunlit and blocking up the shadows behind the subject. It’s also the same as Mr Adam’s choosing to show as much detail in a landscape as possible. It’s all about the photographer choosing.