Hi there,
Yes, two factors is what’s at play. You already know what it is 
I don’t know if it’s AI or some Bean counter in Engineering, Looking at the results on the “typical performance Char’s” The sweet spot for what they anticipate for a MAX external power and the cheapest or should I say less expensive way out meeting in the middle Maybe?
I doubt you get a concise answer, but let’s see if someone takes the bait. 
Inquiring minds want to know too.
Good Stuff man
GL 
PJ 