Some threads that might interest you… I started the TR-J12 thread, contemplating switching drivers to the 55W, 5-XML beast on KD.
https://budgetlightforum.com/t/-/8974
Not my thread, but a good read too…
https://budgetlightforum.com/t/-/6905
At any rate, the specs and numbers listed on KD appear to be spot-on.