LOL, OSR is such a Romney fanboy. No Romney would not win by 15 or 16 points, this isn't 1984 and he's not Reagan. Such landslides are impossible for anyone now, let alone a Republican (and such an uninspiring one to most at that) in our polarized, D-leaning electorate. If he won at all, it would be narrow. He probably would not win D-leaning states like Minnesota, Colorado, Virginia, Nevada, or New Hampshire (another OSR fixation). And the other swing states are debatable at best.
Look at my 2021 post not my 2016 post lol. Also as an incumbent hed win CO NV NH for sure given how close they were in 2016 and after the Comey letter take VA and MN as well