I think it is unfair to consider dominance as only performance vs #2 or #3 in the league.
Look at the top goal-scorers from the last couple of years, more so just a bit of luck that his biggest 5 goal scoring competitors are all having down years (Matthews, Reinhart, Mackinnon, Panarin, Pastrnak). And then guys like Ovechkin and Kaprizov have missed a lot of time. Ovechkin missed 2 months and has 33 in 50gp - paces out to about 43-44 goals in the same # of GP as Draisaitl.
Doesn't mean Drai wouldn't be leading in goals - he's having a crazy year and one of the best in the cap era. But makes more sense to look at the bigger picture. Looking at #5/10/30 eliminates a lot of the high variation of 2 single players having down years, missing time etc.
To me - Ovi's 2008 is still the clear cut most dominant goal scoring season, with Stamkos 2012 right behind him for #2. Draisaitl is right there and could be argued in the #3 or #4 though.
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