If Jagr's PPG was 0.5 and he dwarfed Marleau in games played to get there, that would be one thing. But to maintain 1.1 PPG, with a significant number of games (450) coming after a three-year layoff at 40yo...it's still mighty impressive.
He didn’t really come off a layoff, he simply played outside North America. Which is unfortunate, because his KHL stint cost him some legacy points. Whatever he would have done in the NHL, it would have been better than being outscored by a bunch of KHL’ers.
In any case, I agree that he’s a really significant figure all time. I just don’t think he has the generational relevance of a Crosby, especially when it comes to things
other than scoring. Defense, faceoffs, leadership, playing the center lane… all of the non-offensive factors tilt heavily toward Crosby. And while there’s nothing wrong with Jagr’s playoff record, Crosby is not a guy he wants to be compared to.
And even at that, their scoring profile wasn’t really all that different other than Crosby missing some time. Crosby actually has more top-5 scoring finishes (9-8). They’re close enough in offense that Crosby’s
large advantage in the other cagegories really tilts the balance here.
That doesn't mean Sid has not proven himself worthy in the slightest. If he continues into his 40 at the same rate (or with similar rates to Jagr at similar ages) then, yeah I think there will be a good case to put Crosby over Jagr.
I just don’t see where it matters. We already know Crosby is the better player, see above. Playing for a really long time might move the needle if Crosby were playing catch-up, but he’s not. He could retire today and the only thing Jagr would have on him would be playing a really long time to pad his numbers in meaningless games.