Some of those accomplishments were back-doored. Bush began the Auto bail out, signed agreement to withdrawl troops by certain time period, hunted Osama Bin Laden, etc. Almost any elected President would could have stepped in and got credit for those items.

Also, I believe Obama is hovering somewhere around 38% of promises kept from his 08 run.

PolitiFact | Has President Obama kept his campaign promises?

Lastly, per Yale University sociologist Jeffrey Alexander,

"Had Obama lost the election, he would likely have been remembered in history as the first black president, and maybe little else," Alexander said.

Lastly, lastly; The accomplishment list you posted is from a left of center Democratic point of view publication. Why for example would #25. Protected Two Liberal Seats on the U.S. Supreme Court: be an accomplishment in my opinion?

__________________
Profeshenal spellar