Your big assumption there that those 200,000 people with income of $1M+ have an average of $5M per person is where your logic fails. This source: http://www.google.com/publicdata/explore?ds=a7jenngfc4um7_&#... shows the US total personal income for 2010 being over 12.5 trillion, your two groups only add up to 6 trillion.
It says average income for top 0.1% is $3M and those 200,000 are exactly the top 0.1%.
I'm not sure where the huge discrepancy comes from, when it comes to the total personal income stats you posted and I hope someone can clear this up.
