Am I the only one that thinks George and Mitt sound very much alike?
Yes underneath it all they do sound a lot alike. You wouldn't think so given the relative lighter tone of Mitt and darker tone of his father, but minus that they sound quite similar.
George definitely has the sound of someone from Michigan. It's just that its a little bit more of a 'proper' accent likely derived from spending so much time in gentlemanly business conversations. Those 2 pieces form most of Mitt's ascent, but it also has just the faintest addition of nasal sound that is indicative of way north east accents like the Boston accent.
And all that makes sense given him growing up in Michigan and then moving to Mass(also makes sense with spending time in France). Also picking up the nasally aspect of North eastern accents without the sharper tone with it does give up a little bit of a reminder of the old 20s-40s accents that others have mentioned.