Romney was and always will be at the bottom of my list of GOP contenders. There were 12 at the beginning. All were preferable to Romney except Ron Paul.
But you asked about difference between Romney & Obama.
Not a lot of difference except one. Obama has never worked inside a profit making corporation. Romney OTOH made over
$260 million via profit making corporations. One can’t do that using socialistic initiatives. It is an open question if Romney can make US corporations prosper. With Obama it is metaphysical certainty he will make them less prosperous.
Romney has no idea how to cut spending and the size of government. He raised taxes and fees by 300% in Mass and passed a state version of cap and trade. Even Obama didn't get that passed.
There's no difference between them.
It is arresting to imagine a Romney White House, inevitably filled with as many former Bain colleagues as each of his other public ventures have been: The PowerPoints, the 80-20 jargon, the clinical separation of decision-making from ideology, the detachment of those decisions from moral consequence, a persistent blind spot for people as people. It would represent the final ascension of a perfectly American type, one that has already remade the culture of business. I once asked a Bain colleague of Romneys how Romney thought of his own core competence. I think Mitt thinks hes good at being Mitt Romney, the colleague said.