He's topped 60 points twice in his career. Hasn't done so the past two seasons. That would suggest he struggles, for a player of his caliber.
Looking at numbers since the last lockout means that you're only including a select number of top tier players. Some guys have retired since then (who were better than Duchene), so they aren't accumulating points anymore, and others weren't in the league yet (so it's not possible for them to have amassed the same totals given the shortness of their careers). That doesn't mean Duchene is bad by any means, but it's certainly and attempt to make him appear better than he is.
There is a reason why Duchene keeps making Team Canada (Olympics, WCH, etc).
He is a pretty damn good player playing on a pretty bad team. His even strength production has been elite for years now. What is holding him back is the lack of points on the powerplay. Which IMO is mainly an Avs problem. How Tim Army has managed to keep his job for almost a decade now is a complete mistery to me.
Is he as good as Tavares?
No. But he is closer than you might want to believe.
He would be easily the Islanders 2nd best player. Very easily.
So it would need to be a kings ransom for the Avs to even consider.
Hamonic would probably the only legitimate starting point.
And than you would have to add one of Beauvillier or Barzal to get it done.
That price is very steep but everything else does not make any sense at all.
You are not getting the guy that might prompt Tavares to stay and therefore save your franchise for futures and 2nd tier pieces....