Best outside shooter - Larry Bird, easily, Jordan and Magic both adequate rather than great
Best passer - Magic with Bird not too far behind
Best defender - Jordan by an absolute mile
Best athlete - Jordan, daylight 2nd, Magic 3rd, more daylight 4th, 5th, 6th etc
Best rebounder - I'd go a 3-way tie, considering size, position played, role on team
Best clutch performer - Jordan the best of all-time, Bird probably 2nd best of all-time, Magic slightly behind
Competitiveness - I'd probably go for MJ but more like a 3-way tie. They were all super-competitive in their own ways
Versatility - Magic gets my vote here (the triple double king). Bird well behind in 2nd but probably just ahead of MJ
Basketball brain - All top-notch, but I'm gonna go Bird 1st, the other 2 tied for 2nd
Making team-mates better - been argued throughout this thread but I'd go Magic, Bird and MJ
Pure talent - Jordan definitely with Magic 2nd. Bird well behind in this category but he arguably got the most of what God gave him out of any basketballer in history
Durability - Probably MJ, only had 1 long-term injury in his career although he did spend significant time on the sidelines (retirements) which enabled him to play up to the age of 40. Magic was durable enough but he retired as a player aged 31 (before coming back briefly at 36). Bird must rank 3rd here - second half of his career blighted by back problems, he retired aged 35 and probably peaked at around 30-31
Winning - Jordan won 6 championships in 2 different eras, Magic 5, Bird 3. Magic gets my vote here. He did it against the might of the Celtics and the Sixers for the most part, while all of MJ's championships came against teams that had fine seasons and a wealth of talent but without dominant centres. A real test would have been Houston with Hakeem at his peak taking on Bill Cartwright or Luc Longley.
Summary - Jordan 1st, Magic and Bird equal runner-up