I have heard it said that in order for there to be the most truth in a piece of art, you have to extract the most details. That is why fairytales, Bible stories, classic art, political cartoons, pop songs, dance moves, plays, and mainstream movies hold such sway over the culture. That is not to say that all of the above always maintain the integrity of their message, but that they are a superior form to delivering one in some form or fashion.
Sure the above piece is a ridiculous scenario. Most editorial or political or op-ed comics are. Whether it's Obama as a mere stick figure or Bush as a monkey, it is a short hand for getting the point across. Whenever necessary the artist must practice this short hand.
Some of the basic components of a visual short hand that I have discovered are as follows:
1. On objects and products leave out as many unnecessary details as possible
2. Choose recognizable objects
3. Create easy repeatable characters (made of simple shapes)
4. If you're working with text, make it short and to the point as much as possible
5. Compose, so that your eye follows the action
6. Keep your style secondary to the message
7. Focus on rendering accurate human expressions on your characters
As always, I encourage my readers to explore and find more ways to deliver the message with simplicity and directness. Let me know if you have some things that work for you. I will be glad to talk about it here.