WASHINGTON - Later this winter, Mitt Romney will strike out on a national book tour, but unlike his party’s most successful recent author he does not expect to make headlines with bits of fresh gossip from the 2008 campaign, see his fans camp overnight outside bookstores, or chat with Oprah Winfrey about his family. “Inevitably there are going to be comparisons with the Sarah Palin book,’’ said Eric Fehrnstrom, a Romney spokesman. “We’re not going to match her crowd size or sales. These are two different people with different ways of expressing themselves.’’ -snip- But Romney, considered by many in...