I enjoyed the game before it has moved more towards favoring offense.
Back to HC's - they all need a QB to succeed. Walsh had a 8-24 record (2-6 record with Montana) before they started their run in 1981. I've seen him somehow getting a pass on here. This was before my time as I was just born. But for the guys that watched during that era, what was the outlook of the 49ers prior to the 1981 season? Also, while he's undefeated, he only went to 3 SB's to BB's 9. But I agree you can't rank Coach's just like players as they played in different era's with different rules.
Shula - only 2 losing seasons in 26 years, one undefeated season and 2-3 Super Bowl record.
Bill and Tom were the best in their era.