Both Bush and Obama are responsible for the worst decade in recent American History. Bush made numerous mistakes in his presidency including two over extended wars and enactments of several significant deregulation in the finical industry, leading to the Great Recession of 2008. Obama has also made numerous mistakes in his presidency as well. One of Obama's biggest mistakes to date has been the handling of health care reform, more commonly known as "Obamacare".
Yes, while bush dug a hole for the American people for eight years, Obama promised to provide a way out of that hole but instead dug the hole deeper. He promised to help those struggling with the economy but instead takes vacations that cost more to the taxpayers than bush's vacations. Not to mention numerous scandals under the Obama administration like Benghazi, Fast and Furious, Bowe Bergdahl, VA, etc.
Bush was not really running the country. He took numerous vacations, and Cheney and Rove were running things for him. He followed the strategies of his subordinates. Obama is an extremely intelligent lawyer, and he is trying to make good changes for Amercia. Bush will be remembred as one of the worst presidents, and Obama as one of the best.