Dude, how can you prove that? Maybe they would maybe they wouldn't but stop using assumptions to argue. Manu has three NBA rings playing with Duncan, Manu has won everywhere he played, Manu lead his NT to the gold medal beating a US team that had Duncan, Iverson, Kidd, Lebron James, Dwyane Wade, etc. and also Manu owns the head to head on international matches against Dirk, these aren't inventions these things actually happened in real life.
If you think Dirk at his prime was better than Manu at his prime cool, I don't think that is the case but I accept that that could be easily true. But dude if you think that Dirk is way way better than Manu, to the point that can't even be arguable, then you don't trully know how great Manu is and you have only saw him playing on the NBA.