I considered all 7 classes. Two classes were below 138 (barbs and monks). Two classes were above 141. The rest were 138-141. I chose the 138-141 range that required the least number of adjustments in consideration of the top 2 classes were already being nerfed. I hope that this helps to clarify the rationale for making my statement. Also, I said barbs could be 141, the top of the range.
The elusive question is what do you predict to be the top non-season barb GR clears if the initial patch goes live with 200% rend damage on lamentation?
We know 140 is doable and you can see what a top barb in the current era thinks.