Representation/Exemplification

Goodman claims that there is a difference between representation and exemplification.  What is this difference? 
The difference is in how the material is presented.  A representation involves conveying something more directly, while exemplification offers a more abstract conveyance.  So something like this:

would be considered representation, while this:

would be closer to exemplification. 
And because I just can't leave it alone, I'm bringing "Ashes" back into this.  The expression on the woman's face is a representation of distress, as is the man's pose, to an extent.  The barren trees in the background and drab colors are an exemplification of distress.
But as to the second image in this post, do you think that this is a good exemplification of sadness?  The less direct approach of exemplification, after all, has the side effect of being possibly misinterpreted.  The artist may have intended to convey sadness, but I also see loneliness. 
Which do you think is more valuable/effective, representation or exemplification?

Second image: sadness by zaana on deviantart.com