Economics offers no simple truth like what you're implying. How much greater of a % of jobs were created during Bush's years of tax cuts versus Clinton's administration? The danger of right-wing economic mantra is it oversimplifies economics.
Many of these tax cuts just make the rich richer, and if you assume that rich people just take their money and "create jobs" out of the goodness of their hearts, or somehow re-invest that in the economy , you don't understand the lifestyle of the truly wealthy. Most of their money stays in their hands, and goes nowhere. If anywhere, it's bled out of the country into offshore bank accounts or spent on luxury goods produced in Europe.
I think we should keep taxes low for small-businesses, but we have to keep things balanced. If you own a business, and have no customers cuz everyone's broke, what good is your business now?