Don't forget these are the marginal rates of his tax plan, not the full or absolute rates. It looks like it is going to be a lot more difficult making $40K a year and trying to make $100K a year in a couple of years. Admittedly, I imagine that some of the money that he is planning on spending is going to help those in the lower tax bracket , I hope.
Conservatives don't realize how high marginal rates are on the group of people making in the neighborhood of $30K. What I mean is that if you're making $25K a year with kids, you qualify for certain handouts (e.g. Medicaid, food stamps, etc.), that you don't when you get a promotion and make $35K. It's probably pretty common to come out behind when all is said and done when crossing the threshold (whatever the magical threshold is this year). Of course there is a simple solution, tax not just on salary but benefits too. Or maybe just spending all around.
I would like to see what McCain's tax plan looks like in this format. I imagine it's "lower". But, I have no idea how he's going to convince a democratic congress to decrease spending on anything other then the military. Which wouldn't be horrible.