Why do people think obama is a good president?

Personally I feel he is no different than bush. Be has failed just as bad as bush just failed a different way.lol. we are involved with Libya without the approval of congress or the American people sounds like bush in Iraq to me. He promised to close gitmo, its still open. He promised to fix the economy and its just getting worse. We are still in Iraq and Afghanistan. So really he has done nothing. So my question is why don't people criticize him like other presidents?