I think the important thing to stress is that the best part of EDH gameplay isn't winning it's those "by the skin of your teeth" moments that make the entire table go "wow". The crazy interactions and back and forth style that games tend to take is big for me.
I love MMM (massively multiplayer Magic). We used to play it at lunch in HS. I made a mean deck structured around creature control/theft and AEther Storms where everyone else played creatures, I took the ones I wanted, and then somebody had to pay 4 life to continue the game or else I'd take everything cool and win. LOLz ensued.
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Also +1 for using the phrase "What the deuce"