That’s not your system efficiency, it’s the Bridgelux diode’s raw efficiency but system efficiency is always lower, that’s the marketing I’m talking about.
Samsung EVO diodes hit 3.14 umol/j, so your system number for the SF2000 Pro is 2.7 after driver loss and other factors. If the Bridgelux on the G3000 start at 2.75 we could reasonably expect the same additional system loss of around 0.4 which means the system efficiency of the G3000 is probably about 2.35 umol/j, which matches the math I did above at rating the SF 13-15% more efficient than the G. Hope that helps!