I think its important to reiterate that Delta doesn't look for just pilots. If you get the call, they know you can fly.
It's the intangibles: leadership, honesty, humor, ease, no false confidence, that sorta stuff.
I was told, and its so true: would I want to fly a 4-day or perhaps longer trip with you? If so, you're probably gonna get the CJO.
Delta is a no BS operation. Lie, and you're done. Mess up, fess up.