Last year, Alex Smith’s last-second divisional-playoff touchdown pass to Vernon Davis inspired tears, whoops and hugs as the 49ers secured their first playoff win since 2003. Last week, Colin Kaepernick’s 444 total yards and four touchdowns in a 45-31 divisional-playoff win over the Packers inspired … smiles? Handshakes? On Wednesday, defensive tackle Justin Smith noted the difference in the atmosphere after the two victories. True, last year’s win over the Saints was stuffed with far more drama, but Smith suggested another reason for last week’s muted celebration.