personally by the age of 23, i think magic was better than both of them.
here are some stats (hopefully they line up evenly when i post them:
Player Age Games FG% 3PT% STL REB ASST PTS
MJ 21 82 0.515 0.173 2.4 6.5 5.9 28.2
22 18 0.457 0.167 2.1 3.6 2.9 22.7
23 82 0.482 0.182 2.9 5.2 4.6 37.1
ROY, All rookie 1st team, All NBA 1st team, 1 scoring title, 3 time all-star
Magic 20 77 0.53 0.226 2.4 7.7 7.3 18
21 37 0.532 0.176 3.4 8.6 8.6 21.6
22 78 0.537 0.207 2.7 9.6 9.5 18.6
23 79 0.548 0 2.2 8.6 10.5 16.8
(0.3 attempts)
All rookie 1st team, All NBA 1st team, 3 time all-star, 2 time Finals MVP, 2 NBA championships
LBJ 19 79 0.417 0.29 1.6 5.5 5.9 29
20 80 0.472 0.351 2.2 7.4 7.2 27.2
21 79 0.48 0.335 1.6 7 6.6 31.4
22 78 0.476 0.319 1.6 6.7 6 27.3
23 75 0.484 0.315 1.8 7.9 7.2 30
ROY, All rookie 1st team, 2 time all NBA 1st team, 4 time all-star, 2 time all-star MVP
1 scoring title, 1 NBA finals appearance