I like to see that in Greg's case he would need to improve his power out put with the heavier weight in order to get better at Fran.  But he would need to scale the weight if his goal is to maximise today's power output.  This is a nice dilemma when coaching.  
First if we need to teach athlete intensity we need to "fight" with them to understand that lighter will most of time mean bigger power out put at first.  But in the long run we need to improve strength and capacity with higher loads in order to pass the plateau that may happen after a while.  
So scaling should be done by understanding what is the level and needs of the athlete infant of us, more importantly what is their goal.  
Great article.

The data point showing Greg's power output actually increased at the lighter loading on Fran I think often gets missed.  Also a good data point reminder that 2/3 of the work in Fran comes from bodyweight.  Takeaway:  intensity can be found in; lighter and faster loadings and bodyweight movements.