I never stated that Draisaitl will be the better player in the future. When I stated that Draisaitl was a better player than McDavid in the playoffs, I used the word "was", not "is". If I stated that Draisaitl is the better player, then it old mean that I cannot see McDavid matching him. However, I said that Draisaitl was the better player in the playoff's. By using "was", I do not see carved in stone. I see McDavid/Draisaitl being like Malkin/Crosby, where both players alternate amazing performances in the playoffs.
In terms of Matthews vs Draisaitl, it depends on teams needs. A team like the Penguins or Washington would take Draisaitl since he has a lesser cap hit. While a team like Vegas, with a lot of cap space, would take Matthews.
In the past three seasons, Draisaitl has scored at a 0.99 PPG pace, while Matthews has scored at a 0.98 PPG pace. People will say that Draisaitl plays with McDavid; however, doesn't Matthews still have the better supporting class.
To add on, Draisaitl has had 3 coaches or more in his NHL career, while Matthews has had 1. Doesn't this play a role too?