ChibiPooky
Yay hockey!
If PP1 is dangerous you leave Carlson on it, all else being equal. Green being on PP2 then makes that unit much more dangerous. Opponents need to be deep at PK. You wear out more of their players and fewer of your own.
You also need to make sure you have a solid, consistent PP1 all year in the event Green is gone at some point due to a transaction or injury. We all know this.
You don't change, even if Green looks good, unless Carlson looks bad.
I didn't say anything about Green.