Sorry but the narrative you're trying to tell is irrelevant. The graphs you post are the absorption spectra of isolated pigments in an organic solvent. But we grow plants. In the leaf the absorption is different and dynamic. Depending on the light environment it can he adjusted to maximize light capture.Sorry, i thought i was clear. I talk about its spectrum, blue spike as in the combined blue peak of the two white diodes. Its photon pump is at 437nm iirc , in any case the point is both hlg and mammoth does this, and its a definite value adding feature imo it covers better both cholorophyll A and B;
View attachment 5331772
Chloro A is scarcely covered using a standard HE spectrum while B is very well covered. It also covers better the stomatal aperture action spectrum.
But i kinda agree on photons are photons generally; we tried many, many different whites and whites + red. And most grows they pretty much did the same. Sometimes whites and reds win and yield sometimes whites, seems to be somewhat strain dependant.
Adding another lower blue pump, in our case 400nm, in generous amounts has changed the dial on the grow.
Relevant are photosynthesis action spectra such as the McCree Curve.
The EVO chips with 430 nm pumps are more efficient. that's why they were developed.