I understand your point...unless Cardone just f'd up and loaded balls that were too small in their repro. I wasn't even sure their was a difference in cages but it was too long ago to remember.
The point I think you're saying is the arc of the inner retainer -- if matched to smaller bearings/balls wouldn't mate correctly to the larger OEM balls. OTOH, if the arc WERE smaller, the larger ball shouldn't have seated all the way into the inner retainer...likely making installation of the outer cage problematic.
Mine are still running problem free w/o noise or vibration. So, hopefully THAT's a good sign!
OTOH...at this point, I can't even remember if I had to use the Cardone inner retainer/race.
2001 Ebony VX and 1989 Custom 383 Corvette