Does the "trickle down" theory REALLY work?

Compare the economy of Michigan with the economy of Texas. Michigan has increased regulation and raised taxes and has lost 318000 jobs since 2000, Texas has fewer taxes and less regulation and has gained 1.7 million new jobs in the sames period. Additionally per-capita income has increased by twice as much in Texas as in Michigan. As you can see taxes affect behavior. If we cut corporate tax rates in the US and reduced govt involvement in the Economy we would all be better off.