Not sure how you would even compare the eras tbh.
By 00s PG standard, only CP3, Tyrese, Garland and MAYBE Luka and Trae would even be regarded PGs. Even though I consider Luka a Point Forward.
Most modern guards play like SG with the goal to score, not set up their teammates.
What makes it even harder is that numbers have been inflated for almost a decade now. So a guard that averages 8 assists nowadays would probably be around 5 in the early 00s. I am ignoring individual factors like usage rate, play style and such, but you get my point.
To be fair, deep playoff runs are about the team, not the individual (if you ignore Lebron in 2018 or Kawhi in 2019). Especially with someone like Tatum, who had some awful series in the past few seasons.