Congratulations sir your statement has officially been declared as the dumbest statement in all of Coli basketball history.Top dogs are better too.
The fact you're comparing Barkley (who at one point was the second-best player in the league) to Zion (who's lucky to even be top-20) really says it all.
MJ was extremely fortunate that he had the best support cast out of any superstar, the best coaching staff and his prime years didn't really coincide with the rise of too many other superstars. What happens if MJ had to play the Lakers and Celtics during the 80s instead of the teams he played during the 90s?
When Barkley came into the NBA his Philadelphia team had Hall of Fame Players like Moses Malone and Julius "Dr. J" Erving. He also had NBA stars Mo Cheeks, Andrew Toney and Bobby Jones.
1984-85 Philadelphia 76ers Roster and Stats | Basketball-Reference.com
Checkout the latest Philadelphia 76ers Roster and Stats for 1984-85 on Basketball-Reference.com
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Now take a look at Michael Jordan's rookie roster. Other than Orlando Woolridge; have you ever heard or seen any of those other dudes?
1984-85 Chicago Bulls Roster and Stats | Basketball-Reference.com
Checkout the latest Chicago Bulls Roster and Stats for 1984-85 on Basketball-Reference.com
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To answer your other goofy question: there were plenty of other superstars in the 90. The problem was that Jordan just made them look like Junior high school players. Those 80s teams were lucky that they did not face Jordan with a good supporting cast, because Jordan and Pippen together were lethal and played elite level defense. Other than the Pistons those 80s teams did not frighten anyone defensively.