Secondly, can you say for certain that Mario was the clearly inferior ES player without saying with equal certainty he was the clearly superior PP player? It seems the amount of PPOs their respective teams had was the largest contributor to the discrepancy in their ES and PP point totals.
Here are Gretzky and Lemieux's top ten EV scoring years, sorted by adjusted EV points/game.
Actual|
Adjusted
|Actual|
Adjusted
|
Adjusted
Gretzky|
Gretzky
|Lemieux|
Lemieux
|
Percent
EV Points/Game|
EV Points/Game
|EV Points/Game|
EV Points/Game
|
Difference
-|-|-|-|-
1.80|
1.34
|1.63|
1.34
|
0%
1.76|
1.34
|1.31|
1.10
|
-18%
1.79|
1.33
|1.00|
1.07
|
-20%
1.79|
1.27
|1.04|
1.03
|
-19%
1.53|
1.25
|1.12|
1.02
|
-19%
1.38|
1.21
|1.04|
1.01
|
-16%
1.61|
1.21
|1.15|
1.00
|
-17%
1.29|
1.13
|1.05|
0.95
|
-15%
1.28|
1.05
|1.18|
0.95
|
-10%
1.25|
1.05
|1.06|
0.86
|
-18%
Aside from 92-93, clearly Lemieux's best year in any measure, Lemieux trails Gretzky in adjusted EV scoring per game by ~17%. For example, if Gretzky had 17:00 minutes of EV time, Lemieux would have been playing only 14:06 minutes of EV time in order for them to be equally productive.
That seems unlikely. However, I think the gap between Lemieux and Gretzky in any measure is vanishingly small when compared with other players.
Thirdly, I am not sold on lower PPOs being the reason why scoring levels by the league stars drops while the league GPG declines more slowly. I think lower PPOs is the product of what's happening on the ice that leads to less PPs being called which in turn lowers the PP time for the best offensive players.
Well, a couple of bad seasons isn't necessarily a trend... yet. This season, scoring seems to have rebounded for the top players. Fluctuations happen. And honestly, if Pittsburgh hadn't replaced their decent coach with a poor one last season, Crosby and Malkin would have been closing in on 100 points (at least in pace) and it wouldn't have looked too different than 2013-14. It's just kind of weird for us because each new data point requires a year to pass.
Trying to nickel and dime Gretzky and Lemieux seems unnecessary. Whether its comparison with peers or adjusting EV, PP, and SH points separately, it seems like healthy Gretzky and Lemieux at their peaks would still pass 140 points pretty easily. I seem to remember that I had estimated Gretzky's 6-year peak relative to peers to be 143 points if compared to the top ten of 2014-15. The new-fangled EV, PP, and SH adjusted average for Gretzky's 6-year peak is (after a few hours of work on my part, too)... 145 points. Neither method has much in common. Both methods give a result that varies by 1.5%.
I think we're really,
really overthinking things here...
EDIT: As usual,
here's the relevant data.