This is pretty, but I think comparing Cree at Tj=55 (allegedly accurate by adjusting down to 39C from 55C to hit 12,500 lumens), to Citizen at Tj=25 is unfair to Cree.
Just to again point out the ridiculousness of the Cree tool, I have to input Tj=8 to hit Supra's 12166lm at 2.1A Tj=50.
Why not use Supra numbers and use Tj=50 for Citizen for an equal comparison?
ok his would be a great place to leave the new and improved high-power test data (sorry no vero, we'll be content to slap the crees around though)
@ 1.4A the cree is at 48.44W and 8.30 ppfd/W, a claimed 187 lm/W by PCT at this current
if you want to match the cree efficiency here youd be at about 1.32A = 66W,
citizen tool only claims 178 lm/W and is much more conservative than the cree.
citis cost at least 10% less so at the same lpw you are getting (66W/48.44W)/0.9 = 1.35 =
35% more lumens per dollar.
at 2.4A the cree is putting out 7.33 ppfd/W @ 87.6 W at a claimed 159 lm/W by PCT
citi matches this 7.33 efficiency at 2.52A @131W at a claimed 162 lm/W (closer in this case)
here you are getting (131W/87.6W)/0.9 = 1.49 = 49% more lumens per dollar
so moral of the story, in real world testing of citi 5000k vs cree 5000k db, we should expect 35-50% more lumens per dollar in the 160-180 lm/W range. since the chart above is 3500k, lets change that range to 145-165
in the original chart at 145 lm/W the citis appear to offer 70% more lumens per dollar
at 165 lm/W the citis appear to offer 100%+ more lumens per dollar
so yes that first chart is unfair to the crees.... but keep in mind i put the citis and 3590s at equal prices. you can buy citis from cdi for $42 and prob slightly cheaper in qty. $42 is really bare bones bottom of the barrel price for 3590s in qty. we would imagine citis will be a hair cheaper when they become more common. theyre certainly equaling the cree at 35W and below and crushing the cree above 35W (the higher you go, the greater the difference). 35-50% more lumens per dollar at teh same efficiency is nothing at all to sneeze at!