Joe Sakic (bolded is what he's accomplished by Draisatl's age)
Stat finishes
Points: 2, 2, 3, 4, 5, 5, 6, 6, 8, 10
PPG: 2, 3, 3, 5, 5, 6, 6, 7, 8
Goals: 2, 5, 6, 6, 10
GPG: 3, 4, 7, 9
Award finishes (only top 10)
Hart: 1, 6, 7, 7, 7, 8
Selke: 2, 9, 10
Draisaitl
Stat finishes
Points: 1, 2, 2, 3, 4, 4, 7, 8
PPG: 1, 2, 2, 2, 4, 6, 7, 10
Goals: 1, 2, 2, 4, 4, 4
GPG: 1, 2, 2, 4, 5, 5
Award finishes (only top 10)
Hart: 1, 1-3?, 7, 8, 9
Selke: 6
If you compare them from the start of their career to Draisatl's current age, it's no contest.
But Sakic adds so much to his resume from 30 onwards including virtually all his Selke finishes and his best season where he nearly won every award a forward could (came 2nd in goals and Selke voting).
I don't think Draisaitl has to do nearly as much as Sakic did in his 30s given he has the better individual accomplishments from 20-29, but a few more elite seasons would help.
What's clear right now is Draisaitl is the better offensive player with a clear edge in goalscoring. Sakic's 2000-01 season can compete with any of Draisatl's best and is arguably the top season between either of them. But Draisaitl has slightly more high end productive seasons
Both of them competed against linemates more talented than them (arguable in Forsberg's case) which likely affected their hart record, but obviously McDavid>Forsberg. Yet despite that Draisaitl has the additional hart finalist season.
I think by the time Draisatl's career ends it will be him, assuming he remains an elite player for a bit longer.