W2 has slightly more intensity and throw, but notice how much wider the SFT40 hotspot is and how the spill is noticeably brighter.
This emitter is not offered by Hank. I swapped it in as an experiment. You need a 3V driver plus the reflector and centering ring for GT-FC40. I don’t have beamshots (the beam profile is virtually identical to GT-FC40, but brighter and cool white) but I do have output tests & Sekonik readings.