Personally, I find Hawerchuk's '85 season a bit overrated.
That's not to say it wasn't an impressive season; it certainly was. However, there's nothing about it that makes me think, "Oh wow, he was basically 'generational' that season!"
Yes, he finished third in the scoring race, but Gretzky destroyed him in the scoring race, beating him by 78 points.
Yeah, we're talking about Gretzky and he's the best offensive player of all time - my point isn't that Hawerchuk should have outscored him or come close to doing so for his '85 to be considered truly remarkable; it's that the deviation between Hawerchuk and the guy who set the benchmark for greatness that season is so vast that I just don't think Hawerchuk's '85 quite approximates what should be considered a truly amazing season from a non-"generational" level talent.
The League-wide scoring rate in '85 was 7.78 goals per game on average.
In 1988, Denis Savard scored 131 points and the League-wide scoring rate that season was 7.42 goals per game on average. I don't hear as much fuss over Savard's '88 season as I do about Hawerchuk's '85 season even though it was better from an offensive stand point. Although Hawerchuk's '85 season was maybe superior to Savard's '88 season from a defensive perspective, the irony is that Savard was typically a plus player from '81-'90 while Hawerchuk was usually a minus during that same time period. They both played for teams that were generally lackluster compared to the better teams of the 80s and played in the so-called "Snorris" division.
Anyway, Yzerman's '89 season was quite a lot better than Hawerchuk's '85 season. Stevie Y scored 155 points in '89 and placed 11th in Selke voting that season. The League-wide scoring rate in 1989 was 7.48 goals per game on average. Yzerman finished only 13 points behind Gretzky (who was still in his prime and missed only two games) that season and he finished 44 points behind Lemieux, who was at his peak and healthy that season. Lemieux missed only four games.
If we're looking for a season from the mid to late 80s from one of the non-"generational" (ie Gretzky and Lemieux) forwards that can be considered a "generational-" level season, Yzerman's '89 season is definitely much closer to what we're looking for than Hawerchuk's '85 season.
Of course, Yzerman is generally regarded as having been a better player than Hawerchuk and is certainly placed higher on all-time lists; however, I think '89 was his true breakout season and when he really put himself on the map as one of hockey's greatest talents and that he put himself in the rarefied air between the elite centres and the two generational talents of the 80s that season. Hawerchuk never took that step in my opinion.
Joe Sakic's 2001 season is comparable, in my opinion, to Yzerman's 1989 season. Fedorov had his 1994 season and Forsberg was a beast in 2003.
As far as Hawerchuk goes: I think he was in the same tier as Denis Savard and Peter Stastny in a time of many elite centres. In the 90s, he would have been on the level of a peak/prime Roenick. In the 2000s/2010, he would have been roughly Tavares.
Basically, I don't think Hawerchuk ever vaulted himself to such a level that a comparison to a player like Crosby is warranted.
Hawerchuk versus Jack Eichel might be a comparison.