Not sure I agree, during the covid season or last year McDavid scored like weaker version of Gretzky-Mario (still prime version of them not peak) under some statistical measure, like Jagr, Espo and Howe did.
With different previous at adjusting players season, the latest attempt has been the following with those goals: 1) Only use the top players in the league to automatically adjust for scoring distribution change over time, if rules change, style of play, power play habit make scoring more...
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Look how much Howe distanced himself from the best season of his era (Beliveau) versus McDavid versus the best seasons of his era for something some would call reasonable to do.
During Howe peak stretch 51 to 57, 7 seasons
The best ppg (at least 250 games)
Howe : 1.19
Beliveau : 1.11
Richard : 0.98
Lindsay : 0.94
Geoffrion: 0.90
McDavid 7 seasons prime, 2017-2023, Canadian nhler at least 250 games
McDavid : 1.53
MacKinnon: 1.23
Crosby : 1.17
Marchand : 1.16
Stamkos : 1.14
Howe 1.19 ppg was 21.1% above the average .9825 ppg of his elite Canadian peers.
McDavid 1.53ppg was 30% above the average 1.175ppg of his elite Canadian peers.
Other way to show it, adjusting McDavid to 1.53->1.19 and his peers would look like this (Howe era peers)
McDavid : 1.19
MacKinnon: 0.96 (1.11)
Crosby : 0.91 (0.98)
Marchand : 0.902 (0.94)
Stamkos : 0.89 (0.90)
People often look season by season instead by small group of them and in the 06 it can create the situation where you do not compare Howe season to a lot of elite seasons versus modern players. It is close but seem clearly show McDavid>Howe, but that giving the benefit of the doubt that Canadian talents did not grow a single bit, that the advantage of being on the Wings first line never playing against them not taken into account and so on.
McDavid scoring over 2ppg in the playoff in 22, +15 in just 16, 10g-33pts in just 16 games also feel something Gretzky and him and no one else type of affair, but Draisaitl almost did it with him right there, so...