axle with green bearing problems

I do not see a problem with using the green bearing for longevity -- they did build more than few Fords over the years with 8 and 9 inch rear axles that used a sealed roller bearing for many thousands of miles on their axles with no problems street driving or racing . so why would changing over a mopar to the same type bearing be an issue.
So did all Mopars built after 1970 or so. As did all GM cars (to the best of my knowledge). There has never been widespread failure of ball bearings on rear axles.