Mitt Romney has, for sure, completely proven his immense capability in those things that are relevant to him being the President and CEO of this nation.
MITT ROMNEY, THE MAN, WALKING HIS TALK
Besides his great business and governing career, he has other ways he has proven himself, not through rhetoric, but through action.
He was requested to rescue the scandal ridden 2002 Olympics, which he stepped forward and did, contributing his time for the good of others. A brief video coverage. The Olympics Turnaround. Generous in his giving, "he has been generous to many community, civic and political advocacy organizations" per The Huffington Post article. ""They want to give back to others who have not had the opportunities they had," she said. "For someone in a political role, the mission of creating responsible citizens and leaders, I think, would resonate with someone in a leadership role in business or politics."
The Tyler Charitable Foundation - (The Romney's foundation) Contributes to many charitable causes, including health related research
$1/year as Governor of Massachusetts - From a deficit of $3 billion to a surplus of $1 billion, rescued healthcare from disqualification by Feds, worked for the people.
Activities for his church - As a young man, he went on a mission, where he ended up managing a branch in France; many positions including Bishop and Stake President (as a layperson, in addition to his regular job).
Strong advocate of City Year (now part of Americorps) - "Give one year, change the world" Saving and/or creating companies - 113% return, saved many jobs though he had to make some tough decisions to downsize companies where needed. Turnaround.