I’m in the process of testing this theory right now. I had HPS and MH on my last grow. I just switched over to all LED. I have same strains in the room and I’m starting week 5. I can’t tell if they colas are bigger, but they definitely have a lot more frost on them than the MH/HPS I was using. I suspect it might have to do with the fact that the LEDs are full spectrum.My two cents are that MH and HPS can not be beaten...
but $$ is involved for sure