That's OK because it's not necessary.
Management doesn't need an eye for talent. It needs an eye for demonstrated performance.
If Programmer A consistently delivers excellent software in x% of the time of Programmers B thru G, the users/customers love it, and the maintenance costs are a small % (if they have a way of measuring this), then what the f*&#%@ else does management need to know? Treat Programmer A appropriately or lose him/her.
Talent is in the eye of the beholder.
Demonstrated performance is on the bottom line.