What principles of Zen-Buddhism coincide with Objectivism?

When comparing philosophical systems, I often refer back to the structure Ayn Rand used in her "standing on one foot" explanation of the essence of her philosophy. The four domains of philosophy she used (along with the 'introductory-phrase' I use to explain them to people) are:

1. Metaphysics - "What is the nature of the universe?"
2. Epistemology - "How do I know what I know?"
3. Ethics - "How should I behave?"
4. Politics - "How should groups behave?"

For Objectivisim, her answers are:

1. Objective Reality ("Nature, to be commanded, must be obeyed.")
2. Reason ("Wishing won't make it so.")
3. Self-interest ("Man is an end in himself.")
4. Capitalism ("Give me liberty or give me death.")

From what I've read, I'd venture a Zen Buddhist might answer something along the lines of:

1. Polarities ("Koans"; "Form is emptiness, emptiness is form.")
2. Mystic Enlightenment ("Bodhi" - direct transmission of insight.)
3. Deontological ("Dharma" - duty)
4. Collectivism ("Sangha" - group or community)

Please correct me if I get the above wrong, I'm not overly familiar with the details of Zen-Buddhism.

Overall, I don't see much overlap at all between these two systems.