With 300mw of 660nm in the "200mw Blue, 500mw Green and 300mw Red" ratio's, yes the red will be very weak if 660. I was just sticking up for the wavelength a bit
DZ, (sorry elvis, this isn't helpful to you and a bit off topic, but while we're on the subject) 5:1 may be accurate given the powered lasers you compared in the conditions at SELEM, but when you up the power the comparison chart for red at this wavelength changes massively under certain conditions, mainly when you increase the throw distance and density of smoke in the air.
I saw a RGY recently in a fairly smoke filled club with 2.5watts 664nm mixed with just over 1watt of 532nm, and at ~25m concluded that the red was actually brighter than the green, it punched it's way through the smoke better. Projecting the same lasers close up onto a screen, the green is stronger, not by as much as you would think though but the yellow is a bit limey. Then scanning outside in very light fog, the green is very visible and the red very dim next to it.