Comment by SideQuark

He confuses two different places there is energy. Light is made (this is a little bit of a cheat) of photons. Each photon has a wavelength λ, and a per photon energy E where E = hc/λ, h is Plank's constant and c is the speed of light constant. So energy and wavelength per photon completely determines each other (and the color of the light of that single photon).

These energies are very small. You can add a lot of photons per second, increasing the brightness of that color, and this now has the energy per second of all those photons. So you can have a lot of red photons which sum to some energy, or a different number of blue photons that sums to (very, very close) the total red energy.

These are the two energies he confuses in those two places.