I know of at least 6 guys from a Supplemental 121 Carrier that have gotten shot down by FedEx, ALL with the MD-11 time they desperately want.
3 in the testing portion described and 3 in the second round (panel/SBI/Sim).
And as they don't say WHY one wasn't hired, hard to pinpoint exactly what portion the above got shot down for.
But with 10,000+ applications on file I guess they can, and are, very picky.