A certified NFL expert — that would be Cardinals head coach Bruce Arians — said he couldn’t believe the 49ers squandered a 17-point second-quarter lead en route to a 28-20 loss to the Bears. [...] that’s not quite true. The Niners eventually won 23-20 on a last-second field goal, but Arizona’s rally was more evidence that it wasn’t the same franchise that went 18-30 from 2010 to 2012 and has been inept for much of its 94-year history. The Cardinals might attempt to kick back without quarterback Carson Palmer, who had the third-most passing yards (407) against the 49ers since 2007 in last year’s regular-season finale. Stanton had a middling stat line — 14-of-29 for 167 yards with no touchdowns and no interceptions — in a win that was keyed by four takeaways and a 71-yard fourth-quarter punt return for a touchdown by former 49ers wideout Ted Ginn.