Unfair advantage - you have not only the newest body, but also the cheapest (except perhaps the D90)! Of course you win!
Pretty funny - the Canon shooter next to me had a 5D mk "whatever!" on Friday as I was shooting dance routines next to him. He'd been to more than a few of these and had some helpful tips - it was my first one. He also said my F*300 was "too long," but I got good shots with it. He was trying to be helpful, but you've got to know your own style and give it a try anyway. He had the requisite 70-200/2.8 L and had good timing, but from the few shots he quickly showed me I can't tell you how dramatic or compelling they were. I got some nice ones, but as usual it was exhausting work that merely creates the framework for good things to happen.
Anyhow, I thought it was the original 5D, but now that I think about it, the 'Mk II/Mk III' marking isn't next to the '5D,' so I could have missed it. But basically, it was a 5D "whatever."
Also, he was afraid to shoot over 3200 ISO in the poor light (so it probably was the original 5D). He thought image noise was a cardinal sin, so he shot action at 1/320s. I was happy to shoot at ISO 5000 or 10000 and allow a little noise when viewed at full size - I just think of it like film grain (not as pretty, but close enough). He didn't have any major AF problems that I'm aware of. My K-5 IIs did better than my K-5 in AF - which I already knew it would - but it was more difference than I expected indoors.