How does being a POW and graduating at the bottom of your cl prepare you for the presidency ?

Sure mccain had a hard life but if thats the only qualification for president there are millions that should be picked over him. He graduated at the bottom of his cl at a school he only got into because of his father. Obama on the other hand came from nothing and graduated from columbia and harvard and was the president of the harvard law review. Isn't it time we had an intelligent president?