There was a CNN opinion piece stating that Kobe is right that this team would beat the Dream Team handily.
The theory behind this is based on advances in sports sciences over the decades resulting in athletes that are bigger and faster. So if you could transport Dream Team '92 to today they would be beat because they are less physical.
http://us.cnn.com/2012/07/17/opinion/lee-kobe-bryant-dream-team/index.html?iref=obnetwork
The problem I find with this type of argument is that if these athletes from decades past were living in this current era, they would also be going through the same new advanced training regimens.