Williams disagrees with the popular perception that Green Bay will lean on quarterback Aaron Rodgers to score a waterfall of points while the defense simply hangs on for dear life.
"When people talk about the Packers, the first thing people say is, 'They have a high-powered offense' and things like that," Williams said. "But we're a physical team."
The 49ers are a bruiser of a team. San Francisco loves to slam the ball out of power formations behind one of football's most punishing lines. Green Bay will be tested on that front.