Ahh, I didn't do any formal tests, but the results I got were slightly better, by 70 lumens or 4.2% better than a dedomed XPL V6 0D in my U21 compared to LJ's U21 where the measured amps was slightly less in the V6 0D light - same driver, same mod otherwise. So the difference I measured could be simple variation from piece to piece, or mod to mod of the U21's. I think the W2 1A's I received are at least equal to V6 though, but from what you experiences are with them, I doubt they are true W2's now. I know they had other very suspect listings, like XPL HI V6's...
I see you didn't participate in the XPL W2 thread "Improved XPL LEDs", here: https://budgetlightforum.com/t/-/40087, so we didn't know about your earlier experiences.