Quoting: HeadHighSauce
You're talking out of both sides of your mouth here. If 3 years ago is irrelevant, then so is Pettersson's previous sub-ppg sample.
You're functionally just using a two year weight for jack and some arbitrary set of parameters for Pettersson.
This is why 3 year weights are good because it smooths over things like high OISH%.
Jack Hughes 19 year old sample size is meaningless because he was a TEENAGER. Again to put into perspective pettersson wasn't an NHLer at that age.
Meanwhile pettersson's age 20, 21, 22, and 23 seasons are a valid sample size to compare to jack hughes age 20 and 21 seasons. Pettersson cracked a ppg for the 1st time at age 24 when he had 30 assists to 2 guys shooting the highest % we've seen since 1990, in a division with god awful goaltenders. He needs to prove it again