Excluding the photographer which is a constant through the rest of the variables.
(you can't buy light for landscapes either but you can certainly make the effort to get to a scene at the right time and provide light in other situations)

try substituting these into a sentence :

Good Image vs Awful Image
Good light vs Awful light
Expensive body vs Cheap body
Expensive Lens vs Cheap lens

I've seen people with expensive lenses and bodies present awful images that were taken in good light.
but on the other hand,
I've seen people with cheap lenses and cheap bodies present good images that were taken in awful light.
(mind you if the lens and body and light were better, I daresay the good image may have been a superb image)

They are all important but presentation hasn't got a mention here at all.