You do realize that MJ would golf up to 36 holes in a day and gamble all off-season right?
It's not like MJ spent his off-season only focusing on bball. He was a gambling and golf maniac who also smoked an insane amount of cigars and was a heavy drinker.
Lebron will touch an occasional cigar but I could easily argue LeBron is more dedicated to bball than MJ was. MJ loved competition---that often sprung him into other sports and hobbies that took him away from bball.