Traders Taxed at Unfair Rate?

I see in an article today that Obama is expected to re-suggest a cap of 28% on the value of a deduction for rich people making over $100k a year. He feels it is 'unfair' that someone in the 39.6% tax bracket to actually get a deduction valued at that rate rather than at 28% like someone in the 28% tax bracket would get. Maybe I am missing something but is it only worth 39.6% because they are taxed at 39.6% rather than the 28% bracket. Suggestion: Lower the tax bracket to 28% then the rich would only get a 28% value like everyone else. Then we all can agree that a given tax deduction is worth the same for everyone. Then rich people would not be getting an unfair advantage. BTW - when did the definition of a rich person get lowered to $100,000 from say $1 million dollars like it was many moons ago. Should not the definition be going up with inflation?