Yes, and no. I mean 'no' for those of us who have been playing around with leds for a good while now.
People are always going to chase the rabbit for a few extra grams, IMHO, ozs ain't gonna happen by simply adding 660 & 730.
It's all a matter of balance
All we need to do is get in the ball park. The plants will likely be able to make small adjustments
Of course I could be wrong about this. Totally speculative, but you saw what captainmorgan did with all 9w Cree globes, right? F me, I'd be stoked.
I get that quality under my HOT5s, and didn't do too shabbily growing the mother of my 4 current clones under ~ 50w of household globes then finished by adding a RB ufo 90. I'm way ahead of that grow now thanks to 92w of led tubes spreading light evenly over 3ft of canopy