I’d love to see measured numbers to support this, as I have a feeling it is false.

SST-40 appears to out-throw it in the few reviews with comparisons I’ve seen here with sheer brute force of output. Dedomed/sliced SST-40 will do so easily, it becomes significantly throwier.

SST-40 or SST-20. XP-L HI doesn’t focus right in C8s, as I see it.

I found that my C8’s with XPL-HI emitters produce a very tight hotspot and narrow beam, is this what you mean?