If we're going to base the criteria off of what determined Jordan's greatness, let's determine why he was so great:
1) He got his team multiple championships
2) He got his team multiple championships
3) He got his team multiple championships
4) Athleticism, MVP's, scoring records, etc.
You can argue about the scoring records, the triple doubles, etc until you're blue in the face. Until Lebron leads his team to a championship, you can't put him on that top tier.
If you want to talk about who the best player is right now..You'll have a good argument. Offensively Kobe is better, defensively Lebron is better. Kobe and Lebron are both in the finals. Kobe has more talent around him. But despite having that talent he still puts up similar numbers to Lebron. And Kobe's team is up, whereas Lebron's team is down.
I just don't see how anyone can say Lebron unless they're a Kobe hater.