As I understand this defense, the corners play close to the line of scrimmage and it's the safeties who are responsible for deep zones on each side of the field.

Indy's recently-activated stud safety, Bob Sanders, is not as far as I can tell known for his coverage skills, but rather his hard-hitting run defense, like Troy Polamalu.

Am I (a) wrong about the Cover-2, or (b) wrong about Sanders, or (c) identifying one of the possible areas of vulnerability in the Indianapolis defense?