Well consider that metric can vary as well with light distance to canopy, like could be running 50w/sqft when the lights at 3-4 feet away but say they were at 9 inches things would be toasty.
But was at 25w/sqft on the low side to 40w/sqft on the high side at 12", now i’m trying out 17-23w/sqft at 18" and am banking on height growth with shrink the distance causing higher light values as that decreases, inverse square law and all.
I was recommending around 35w/sqft as a target to aim for but also consider most run there lights higher than i do, but now i have to rethink that recommendation… lol well better to be on that upper side of the spectrum though than claiming more and under delivering.
Genetics forsure can play a part, also other factors as well like a lot of my environmental issues but honestly we don’t really know unless comparison trails are done.