Ovechkin was always used very heavily on PP, to the point where his efficiency was not too good (though better than that of any Caps player who could have replaced him). He had enough stamina to afford this use and delivered a lot of PP goals in return.
2007-08 was in fact the best Kovalchuk's season goal-scoring-wise (he had the same 52 goals in 2005-06 as well, but scoring was much higher then). So Ovechkin gets full credit for outscoring Kovalchuk in 2007-08, it is not like outscoring Pasta this season when Pasta was not close to his peak form.
It’s not about Ovechkin’s efficiency necessarily though. The issue is that Matthews hasn’t been afforded the same opportunities due to coaching. I do believe Ovechkin’s efficiency is hurt by the number of minutes he’s usually played on the PP, but his totals also wouldn’t have been the same with considerably fewer minutes.
Ovechkin was 1st among forward in PP ice time in 07-08, whereas Matthews was 30th this year. 30th in 07-08 would have been roughly 70% of the PP time Ovechkin received. Would he have scored the same number of goals if his PP time was reduced that much? Probably not.
The point about Pastrnak was more about dismissing Reinhart. Peak Pastrnak is only 3 more goals, so again, I don’t see the point in using name value to criticize the competition. And while those 3 goals would affect Matthews’ lead over 2nd, it should be noted that Pastrnak’s year was the best 2nd place finish since scoring went up:
If we look at 2nd place finishers in recent years, you get:
Reinhart 57
Pastrnak 60
Draisaitl 55
McDavid 48 pace
Pastrnak 56 pace
Reinhart’s season is actually one of the better ones.
And then if we compare it to Kovalchuk:
Lead over 3rd: 4% Kovy, 5.5% Reinhart
Lead over 5th: 20.9% Kovy, 16.3% Reinhart
Lead over 10th: 30% Kovy, 29.5% Reinhart
Lead over 20th: 62.5% Kovy, 54% Reinhart
I don’t think Reinhart’s year stands out as being worse than Kovalchuk’s enough to focus on