Right now, from the 2013 NBA All Star Game, here are the players imo that could play in MJ's era from 1984 to 1998 effectively and to the level they are playing in today's game:
Lebron, Kobe, Durant, Parker, Melo, Duncan, KG, Aldridge, Z-Bo, Paul, and that really might be it imo. Everyone else, like a Noah, Lopez, I would proabsbly be bench warmers trying to go up against the Hakeem's, Shaq, even an older Kareem. I'm not sure of the scoring point guards like Westbrook, Kyrie, Holiday, etc. would do against Isiah, Magic, Stockton, Payton, etc. They would get that work imo. And the other wing in this year's All Star Game just wouldn't hang with Jordan, Bird, Pippen, Drexler. This year's Wade is nowhere as good as the old D-Wade, but the old D-Wade could definetly hang and be as good as the other wing players. James Harden I wouldn't be too sure about, but he could be like maybe an Alex English type of scorer maybe? I'm not completely sold on his defense, plus he is what 6'4-6'5ish? Jordan does have a point imo.