A head-to-head comparison would be the only way to resolve this. Lumen measurements and watt ratings are so skewed in the LED marketing world they are meaningless. Asking milliamp draw @ 12.00 volts is better but eyeballing light output along with milliamp draw is the only way to keep comparisons realistic.
Some of the early non-buyincoins purchases of plates have failed. Patches of non op devices splotch the plate --- INSIDE REFRIGERATION EQUIPMENT (display cases) MAINTAINED AT 40F.
One thousand lumens is BRIGHT. My 10-volt, 10-watt chips require a (now) twenty-dollar star 90mm heatsink. Now to expect 470 ma. chips to function without benefit of any heatsink is a little hard to swallow. I adjusted current through the 10-watt chips to OEM spec recommendations.
Dealing with the LED industry is like enduring a gathering of sports fishermen. If you expect facts a brain surgeon is a definite recommendation.
