Why media forgot "double taxation"! Mr. Romney as an investor actually paid 50% taxes: 35% at the corporate level plus 15% at the personal level:
http://www.bloomberg.com/news/2012-01-23/buffett-blames-congress-as-romney-pays-15-tax-for-shoving-around-money-.html
With all due respect, Mr. Buffett did not take into consideration that investors are taxed twice.