I am going to unapologetically stand up for Jaylen. He averaged 18.0 pts/gm in the playoffs (including a game where he was injured and scored just 2). Just for context, Tatum averaged 18.5 Brown was 47% fg% and 39% 3P%. Tatum was 47% and 32%. The point is not to play the 2 against each other but to show that both are really good. Yet all you hear is how great Tatum is and what Brown needs to work on or who we should trade him for.
Jaylen essentially scored as well as Tatum but is a notably better defender at both the 2 and the 3. It was Brown that was chosen to cover LeBron. He didn't stop him, no one does, but he held his own.
Brown does need to work on his handle (to me he shows flashes but is not consistent), his free throws, and his passing but I he is going to figure this out. He also did succumb to the the pressure in Game 7 and shot poorly (while still playing good defense and getting 6 rebounds).
I understand why people are so excited about Tatum but I don't understand the lack of excitement for Brown. Brown is a budding star who has fully developed physical strength but needs to work on handle and passing. Tatum is a budding star who has that smooth thing but at his current level of strength can be pushed around on defense (his biggest flaw).
Also, I think it is a trap to put too much into Tatum is ahead because Brown is a year older. Tatum was better groomed as a youth and then played at Duke. Brown was more of a raw talent that went to U-Cal Berkeley. I don't think it is wrong to just take them at face value, especially their play in the playoffs. We are really lucky to have both.