Rick Perry's job attack is misleading: he says Mitt Romney ranked 47th in job growth (a talking point now echoed by pundits), but at the end of Romney's term in office the unemployment rate in Massachusetts was 4.7 percent. Between 4 and 6 percent is considered healthy. Under 4 percent is considered unhealthy.
The only way Massachusetts could have "created more jobs" was by increasing the population. But the Massachusetts population has remained essentially unchanged for 20 years because it's saturated.
Massachusetts is the third most densely populated state in the U.S. Therefore, Perry is attacking Romney for not meeting a useless quota.