Your references are not relative to how I understood the question - question was on the “BLF X6”, not the SS/Cu Rev 2 version - night and day. Emitters and drivers are different. Lumens is in my PVC light box – same exact design and builder as Dale’s. Our #'s have compared very close over the years with using the same light box, same meter, over many comparative lights. The SS/Cu or alum “KRONOS” X6 is a different animal in cost and function - XPL HI emitter and higher amps with our BLF FET+1 driver. The original BLF X6 was not so good in amps. Also for Dale’s D80, I’ve gotten two BLF D80’s and both performed much poorly that Dale’s in amps. Been through the ringer testing the first BLF D80, and best I could tell it was an under-achieving LED emitter. Also my lumens is quoted at 30 secs - not sure what Dale quoted. He tends to quote the instant startup reading on his hot rod lights - I’m attempting to do it the recommended way, as we all used to. These #'s were freshly taken yesterday, and have no reason to doubt them.
Edit: Hhhmm. I checked the lumens I measured back in January on the 1st D80, a 3C tint version, and it was about 1100 lumens for about the same amps measured -- I'll do some sanity checks and testing on my lumens measurements -- I'm about 175 lumens lower now. The problem with these type of group buys is we have no assurance of the LED bin used - they won't tell us, and therefore, things can change in batch production. Also I could have gotten a low performing light, or something wrong that's restricting output --- I'll double check all of it this evening. I got lights with known output I can check, then review this D80 unit specifically - might be something in the tail or the LED.
Edit #2:
Did a bunch of re-tests last night, and seems like something did go astray with the D80 measurements the first time, quoted above. Dunno, am using a different Samsung 30Q cell now, and maybe the room temperature had an effect (1st readings done a few degrees cooler at 61F), but that wouldn't explain it all. The battery is suspicious because even the tail amps is up now.
New measurements, D80 (stock 1A tint):
On a Samsung 30Q @4.21v: 4.05A measured at the tail w/clamp meter:
lumens: 1088 @start, 1037 @30 secs, throw: 31 kcd, taken at 5m (352 meters)
The BLF X6 stayed the same as the earlier readings in lumens and throw. Again, this is an original BLF X6 from the original BLF X6 group buy. There are many X6's around, some by Eagle Eye, some by Manker, and various driver/emitter combos, so several choices are available now.
Btw, the BLF D80 I ordered on Jan 26th (the one tested here) came with the long battery tube 
, so guess they've been shipping them for a while now.
Stock, this D80 can really throw for it's size!
