Typically failures happen either very early in the life or later down the road and the causes are different. An early failure like this tells you nothing about long term reliability.
BTW I believe Chrysler is also sourcing transmissions for ZF, so the distinction is not clear cut.
[But, then again, I'm a guy with the classic 3 speed Torqueflite, primitive but wonderfully trouble free]
'89 Wrangler YJ
97 Grand Cherokee (ZJ)
87 MB 560SL roadster