Obama has frequently cited Buffett's complaint that the tax code is unfair because he pays a lower tax rate than his secretary.
http://www.cbsnews.com/8301-501708_162-57364702/buffett-secretary-to-attend-state-of-the-union/
It's harder to find a bargain in the large cap arena, where stocks are more closely followed, than in the small cap arena. That's why Buffet makes "bad" bets now. They're not bad, they're just not as good as the ones he could make with a smaller asset base.
Your CNBC link provides a great, grammatically incorrect picture!
http://media.cnbc.com/i/CNBC/Sections/News_And_Analysis/_Blogs/Warren_Buffett_Watch/_DAILY%20POSTS/Link%20List%20-%20Three%20Hours/090724_WBW_cnbc_stocks.jpg