If I was that much of a homer then I would declare them #1 and #2, right?
No, I truly respect greatness from anybody in any NFL team. I'm a Cowboys fan, first and foremost, but I am also an NFL fan in general.
Realizing that individual speculative opinion does indeed play a part was the reason I didn't assign a specific rank to either.
All I'm saying is that, if you listed the top 5 HCs in NFL history, you must include the name Tom Landry.
As far as criteria.....well, when you consider that Landry invented half of what we still see in the NFL....that rather speaks for itself, although I could easily supply an exhausting list.
Writing the list would be the hard part, the content is easily obtainable