The winless 49ers’ record isn’t reminiscent of their recent glory days, but they’ve got this going for them: Their offense is similar to how it looked when they were winning under Jim Harbaugh. At least that’s the opinion of Cardinals coach Bruce Arians, a two-time NFL Coach of the Year who shares an offensive bent with Harbaugh and 49ers head coach Kyle Shanahan. (They’re) “a lot more like when Jimmy was there,” Arians said.