Not true. There is no tax increase on anyone other than the "rich" in his plan. Where did that study come from anyway? Romney's plan calls for making the Bush-era rates permanent and moving toward a flat tax.
If you bothered to read the OP you would see that the plan comes from the independent Tax Policy Center, "a joint project of the Brookings Institution and the Urban Institute."
Romney's plan calls for a repeal of the Estate Tax (God knows why) which disproportionately benefits wealthy people and investment cuts that also disproportionately affect people like him. So stop claiming ignorance and faux outrage and start reading the links that are posted rather than merely spewing your Fox talking points across threads you know and understand nothing about.
Most wealthy Americans know how to avoid the Estate Tax through estate planning, so it is primarily the middle class that gets hit with it. And besides, it hurts businesses and the economy. It's not about what's "fair" based on somebody's definition, it's about doing what's good for America. And putting undue burdens on our economy because somebody thinks that we need to promote somebody else's definition of "fairness" is not good for America.