""While Wurzelbacher told Obama that he would be taxed at a higher rate because the company grossed more than $250,000 a year, Ohio business records show the company's estimated total annual revenue as only $100,000. Actual taxable income would be even less than that."

You're damn straight it would be even less than that. Total revenues do not include wages, materials, office expenses, transportation, health care, or any of another dozen items. I strongly suspect that with a total gross revenue of $100,000 in the plumbing business you'd be lucky to take home a quarter of that.