PappyJ:
Since the US ATP was the easiest certificate I have obtained of my five ATPL's (Japan, JAA, and several others). I can't say that I'm impressed by a "ATP holding Airline Captain."
I can only speak for my own experience. When I was a young puppy (unlike a "pappy") at TWA in 1967, the director of flight training gave us student captains a very good lecture. He said, "I can rate a monkey in any TWA airplane" (ATP and type rating). "What you are going to learn about being an airline captain will take place in your minimum of 70 hours of line training with two experienced check airmen after you leave here with your ATC type rating in pocket."
I would think you would have a great grasp of that concept.