Bret Miller writes:

And, do different 40 watt 36" bulbs give off different amounts of
light, or does it just seem that way based on the "Temperature" of the
color?

Yes, things like various phosphors affect luminous efficiency. Gets worse
as the tube ages. Your eyes are more sensitive to the middle of the light
spectrum than the ends.

Color "temperature" is used of fluorescents, but they don't really have a
temperature, they just evoke a perception of approximating one, typically
not very well. It's an illusion to the eye, which is why your digital
camera photos don't look right under fluorescent lighting.