Three problems with your point here:
1) Your stats disregard 30 some percent of all scoring. It's a fairly common way of detracting from one of the best powerplay players and the greatest powerplay goal scorer of all time.
There's no disagreement here. I've said many times that Ovechkin is one of the greatest powerplay performers ever.
2) The Pens likely have the upper hand in terms of goal differential in the seasons you've not included. They certainly have it as a team as a whole.
The data for 2006 and 2007 doesn't exist. We can try to back into it using a bunch of assumptions, but I thought it was better to post the concrete data only.
Out of curiosity, I looked up 2023 and 2024 just now. The Pens and Caps had virtually the same results at 5v5 when Crosby and Ovechkin are off the ice (a GF to GA ratio of 0.93 for Pittsburgh, and 0.92 for Washington). Crosby personally had a 1.15 ratio, and Ovechkin had a 0.81 ratio. It's the same general trend we've seen for the past decade - on similar quality teams, Crosby is more effective at driving his team's results at 5v5 (this is something that, I think, is pretty obvious from watching them play).
Again, this doesn't take PP scoring into account, where Ovechkin is one of the greatest ever. But if we're going micro-analyze both players, surely it's relevant to recognize their strengths and weaknesses. (Nor does this include PK situations, which is essentially Not Applicable for both players).
3) Ovechkin is always going to have tougher match-ups than Crosby because the Capitals have generally never had a second line that would occupy anywhere near as much attention as Ovechkin's line. Whereas for the Pens, Crosby is typically going to split time against the opposition's top D pairing or shut down lines with Malkin.
I agree that Ovechkin virtually always faces the opponents' top defenders. In general, Crosby does too (I know this is an old example, but look at the 2008 and 2009 Stanley Cup finals against Detroit - it was Crosby, not Malkin, who was targetted by Zetterberg and Lidstrom). But I agree with your general point that, over the course of their careers, Ovechkin was more likely to be targeted by the the opponents' top defenders (but it wasn't 50/50 between Crosby and Malkin either).
You just made a post to suggest it's not wins and losses that matter, but goal differential at 5v5 only. But you rely on wins and losses here (which is a proxy for making the playoffs). Personally, I'm not a big believer in WOWY stats because there are too many other factors that amount to important context.
Conceptually, looking at wins and losses would be preferable. But that's a small sample size (particularly for Ovechkin, who's missed hardly any games throughout his career - and of course, that's a point in his favour). Looking at goals for/against gives you much more data to consider.
The other reason GF and GA data matters is it gives you data from every single season. Even if someone played all 82 games, you can look at how the team did when a player was off the ice. If we're looking only at wins and losses, most seasons can't be analyzed in any meaningful way (ie we're not going to draw a meaningful conclusion from Washington's W/L/T record in the three games Ovechkin missed in 2009 - but we can tell that they were vastly better at outscoring their opponents when he was on the ice, over the course of the entire season).
(EDIT - I don't want to rehash the old Crosby vs Ovechkin argument. My point was, their teams were fairly comparable over the course of their careers. Yes, Crosby might end up with 3 HOF teammates and Ovechkin might only have 1, but we're not doing a fantasy draft. The Penguins (excluding Crosby) and the Capitals (excluding Ovechkin) were roughly equal over the course of the past twenty years, and that's ultimately what counts).
