The first column is Ovechkin's assist rankings (ie where he placed in assists, year by year, sorted best to worst). The second column shows the goal rankings for Bill Guerin, and the third column shows the goal rankings for Zack Parise.
Why am I showing this? To give some context to Ovechkin's career assist totals. Yes, Ovechkin has 663 assists. It's a big number - but he's ranked higher than 40th only seven times in 18 seasons. (Guerin and Parise have ranked higher than 40th in goals six and nine times, respectively). Based on hockey-reference.com's (flawed but usable) adjusted stats, Parise and Guerin rank 55th and 65th all-time in adjusted goals - roughly the same as Ovechkin's rank in adjusted assists (T-57th).
Guerin and Parise are both very good players. Zero chance either of them will be in the Hall of Fame, but both are "Hall of Very Good" type players. When I think of Bill Guerin, it's his goal-scoring combined with his speed, his size, and his physicality. For Parise, it's his goal-scoring, speed, and tenacity.
So these are two very good players, and goal scoring was probably the single strongest aspect of their game. Guerin and Parise are both over 470 adjusted goals (per HR.com) - more than Bossy, Bure, Kariya, Hawerchuk, and Perreault. But their (adjusted) career totals, and their year by year ranks in the goal-scoring race, are very much in line with how Ovechkin ranks in assists. All of them have 3 years in the top ten, another 2-4 years in the top thirty, and the rest of their career totals comes from compiling a large number of decent (but not great) seasons.
For most players, saying that they're as good at something as Guerin/Parise were at scoring goals would be a huge compliment. But if we're talking about the top ten or fifteen players of all-time, I'm not impressed that the comparison can even be made. (I can't picture comparing, say, Jean Beliveau to "only" a Guerin/Parise level player in any aspect of his game).
My point is - Ovechkin is probably the greatest goal-scorer ever. Let's focus on that, and not try to exaggerated his playmaking ability based on his career totals. We've watched his career. He's not one of the top 60 playmakers ever, despite having high career totals.
(For the record - I've made the same criticism against Hull and especially Richard).