I didn't find the previous thread and did make an observation the other morning when I was cooking. I have a 13" Griswald and a 13" Lodge and they were side by side on the front burners.
I noticed that the oil in the Griswald (smooth bottom) migraged to the edge of the pan much faster than in the Lodge (pebbled pan). It also migrated much more completely.
When I saw that I thought of the previous thread and don't remember anyone mentioning this.