Brandon Marshall had six catches for 81 yards and a score as the Bears outslugged the Lions, 13-7, on "Monday Night Football."  Jay Cutler threw for 150 yards and the score to help the NFC North-leading Bears improve to 5-and-1.  Matt Forte rushed for 96 yards and Chicago's defense forced four turnovers in the victory.  Matt Stafford passed for 261 yards, a touchdown and an interception for the Lions, who dropped to 2-and-4.  Ryan Broyles caught the touchdown pass with 30 seconds left in the fourth.  Calvin Johnson was held to only three catches for 34 yards in the loss.