I'm not sure what his numbers would turn out to be eventually, but there's something that needs to be considered here. Like in war, man adapts very quickly in order to survive. In WWII, the Germans led in jet engine technology, so this forced the allies to play catch-up very quickly. The same would happen here. Teams and players would see Crosby's composite stick and high tech skates, and within months, the rest of the league would have them. Players would watch him downing a protein shake, and stop having a steak, beer, and cigarettes before a game. And players would start copying his workout regimen. At the end of the year, Gretzky would still be a better player than Crosby.