Rodman was the best rebounder in history before he played with Jordan. I guess you can claim Pippen wouldn't have been a great player without Jordan, but I haven't seen a single piece of evidence to support that claim other than the fact they played together.
Phil Jackson deserves most of the credit for pushing the right buttons, most notably for pushing Jordan's buttons correctly. He was able to accentuate Jordan's best quality (pure scorer) and limit his worst (terrible terrible teammate both on the court and off). I think you do a huge disservice to the greatest NBA coach in history to pretend that Jordan was the cause of the Bulls player development and not Phil.
I think history post 1998 will bear out who can claim responsibility for player development. There is a reason Phil went on to 5 more championships while Jordan built the worst team in NBA history.
If you've listened or read guys on the Bull's beat when Pippen showed up you'd think differently about Pippen's development. Obviously not guys that were established like Rodman. You still have Paxon, Armstrong, Grant, (not Cartwright).
Aside from Kukoc, the second three-peat teams were already developed players. Jordan trained the team he won his first set of championships with by leading in practices and making them all better players.
The bold is not what I'm talking about. Compare it more like who would you want to practice with, Jordan or Iverson?