if you are just talking about tax rates, it doesn't reflect the whole picture. Romney's income is mainly from capital gain. Even say that huge amount is from regular salary, his payroll tax will be maxed out in couple days. (100K max). Regular people tax rates are payroll tax 8% + Fed tax 25% + state income tax %.
A better way to make everybody feel better is taking away current tax code, replace with flat tax. However that will take a lot of jobs away from accountant and lawyers. Dems are representing them, so it would against it for sure.
