Gretzky respectfully scored most of his goals on goalies who stayed up, in the 80s where games were regularly 7-6.
I would say that's kind of
disrespectful, by you. Your math is a little off.
The vast majority of NHL clubs in the 1980s scored between 3.5 and 3.9 goals per game.
Yes, we all know that the goaltending position has improved greatly, regardless.
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About Ovechkin, I think he's fine. Before the season, I predicted he'd score around 35 goals, and maybe now I'd dip that down to about 30. But he'll still get his goals.
The issue he's now facing -- as I predicted a couple of years ago -- is that the Capitals appear to be going into the basement a bit. (They don't totally suck or anything, but I'd be surprised if they're truly competitive for the next few years.) So, Ovechkin's choice is to keep playing in his "hockey senior" years for a non-competitive club of guys 10-20 years younger than him, or to retire before he knows if he's truly done and/or has a chance to break the goals record.
Many all-time greats have faced the same dilemma, of course.