No offense to anyone, but you really need to get you facts straight before you start bashing a product.
First off, the UCA and UBJ in the double wishbone suspension does not bear load like the spindle or the LCA or LBJ does. Putting in a chromoly UCA is not really going to benefit you that much. Also explains why we never really see UBJ failures.
The LR UCA's are in fact stronger and the ball joint is much larger and has more range of motion than the stock UBJ. But the main benefit of them is that like other UCA's, they have approximately 2 degrees of caster built in. But you can also adjust the caster and the camber +/- 2 degrees. The TC and Camburg have ZERO adjustment. Not saying have the adjustment is required but its nice to know you can set the alignment pretty much wherever the hell you want it.
As for uniball vs balljoint, i would not want a uniball where i live. It is open to the elements and in CO, that means dirt, mud, snow, mag chloride, and other crap can get in and shorten the life. The sealed ball joint keeps all that stuff out. I know uniballs are stronger and work great in the desert but thats not where my truck gets wheeled.
And FWIW, i don't work for LR or any company that sells them and i don't have any aftermarket UCA's on my truck. Yet.