Do Republicans truly believe Obama could have Fixed the entire economy in 2 or 3 years?

Reagan did not get unemployment below 9% Until the very end ( last few months ) of his first term. Bill Clinton had high unemployment his entire first term. Both Presidents had a 43% Average by the end of their first terms so... When Republicans attack the president for not doing good enough. Do they believe he should have the problem fixed faster than Ronald Reagan did? Or Bill Clinton?