While I think Ovechkin probably does end up in the top 10 of all time it's also possible he doesn't as there have been 100 years of NHL hockey so it's possible that someone from the other 80 years might slip in between Crosby and Ovechkin.
I think it's possible that a current player could also end up slipping between Crosby and Ovechkin but that is also 15 years away so we can see how it unfolds.
Ovechkin is better than Brett Hull plain and simple.
And you are partly right, the name of the game is scoring goals but the bigger goal of the game is winning your last game of the season.
Here are the top scoring players over the last 2 years.
I can easily see 5 forwards that have been better than him.
Also voters disagree for 17-18, Ovechkin was 9th in Hart voting and that doesn't look out of place really.
2017-18 NHL Awards Voting | Hockey-Reference.com