I do not think it is the same thing, in my opinion. Medvedev can play so-so on baseline rallies, return and other shots, but if he plays the important moments well then he can win the match.
In my view, playing perfect tennis against Djokovic in a slam will be Stan Wawrinka in 2015 RG Final or even the 2013 AO match.
As for the Alcaraz match, Medvedev did not just stay the course against Alcaraz. He actually had to be really aggressive from the baseline. If Medvedev stayed on course, Alcaraz would have blitzed him just like at Wimbledon. I could see the difference in Medvedev's demeanor especially after he won the 1st set.
One more thing: Yes, Medvedev will need to adjust when Djokovic adapts to the situation. That I agree 100% with you. But, I think Medvedev knows who is he facing in the final. He won't get intimidated AND he realizes that Alcaraz is not Djokovic.
Yes, agree on the last part.
What I mean by "staying the course" is that he didn't let up - he kept to his game plan, which worked. Novak is a different ball game. He'll adapt and adjust, and Daniil will have to adapt himself.
In a way, Carlos reminded me a bit of Roger, in the way that Roger was inferior to Novak and Nadal: He wasn't great at adapting. I mean, he didn't figure out how to beat Rafa consistently until 2017. I think it has something to do with his early dominance - it worked so well for four or five years, but eventually stopped working as well - not just against Novak and Rafa, but the field as a whole, as more and more players began to emulate Djokodal. So maybe Carlos is having a wake-up call that will prevent that. I mean, at 20 one can hardly be expected to have the adaptability of Novak.
Anyhow, the point being that Daniil took a tactical approach to Alcaraz that worked. He'll need several approaches to beat Novak, IMO.