Thank you Marc for you input.
There is a lot of hockey cards history in your answers. It certainly add some dimension to collecting!
Since I'm only looking from the angle of statistics, I'm left with a few interrogations.
If we know that uncut sheets have been cut recently with the latest laser cut technology,
I assume the end result would have left similar growth of PSA9 POP across all the cards
of the sheet.
Also, we can reasonnably assume that if a card was misscut during its original production,
some of the cards immediately around it would also be misscut.
I don't know what to do with these isolated low POP cards:
#192 (Column2, Row3)
#153 (Column5, Row3)
#195 (Column7, Row11)
#140 (Column11, Row4 and Row7) Double print
On the other end, the low POP of cards of the last column could be explained by the fact they are
located in the last column. Harper and Picard are on that column. For instance cards from that
column could have wider/narrower right border preventing most of them from having the high grade.
As for the biggest unanswered mystery, what happened to the cards from the first three rows, last five columns?
With an average PSA9 POP of 3 per card, while the cards around the area have PSA9 POP of 25, it's almost like
if these cards were cut on a different machine.
It will be interesting to see how the future will unfold.