Absolutely not. Sparking the War on Terror by invading a nation because it was believed they possessed nuclear weapons when they did not is hardly the action of someone who deserves a positive rating. Innocent lives died on both sides because of Bush was bought and paid for by the military industrial complex.
Of course, there are more reasons than the Iraq War, although that is the largest perpetrator of his classification as an unsatisfactory president. Destroying our public education system by implementing No Child Left Behind, which is farther away from the policies of the most successful nations in education, opposing equal rights for gays, giving tax cuts to the rich while increasing military spending, launching our country further into deficit, and cut funding to stem cell research, are other notable travesties.