It was accurate and really fast! there is not that much light at the canon booth and they had not the fastest lens on it (24-105 4.0) and even in that conditions it was totally accurate... It's a completely diffrent system then the 5D II or 60D, so it doesn't matter if its 1 cross/dualcross/wtfcrosspoint or 10 or 100. It works absolutely fine! So STOP COMPLANING until you had the camera in your hands, took it into dark environment and experienced something completely diffrent!
What looks spot on when reviewing on the LCD is often OOF when reviewing on a monitor during post. 'Totally accurate' with the deep DoF of an f/4 lens is not the same as totally accurate with the razor-thin DoF of an f/1.2 lens and a close subject. How was the AI Servo tracking performance?
I'm not complaining, just suggesting that the jury is still out, and 20 minutes with a camera at a trade show does is not sufficient for a thorough test.
I also played around with the 6d at the photokina, i was really amazed too and ALSO with the 24-70 f/2.8 it was fast and sharp! Sharper and faster AF then on my 7D, i have to say... i loved it! I just want to know if the IQ and noise level is as good as the 5d3 if that is true, i buy the 6D i have a 19AF crosspoints and i sometimes are disapointed in difficult details that it is not that sharp because of the crosstype. Crosstype is not always better....
The only thing that i can say, it was fast, accurate (zoomed in on the LCD, yes not a monitor i know) i really loved it, and the 1/4000... well then use your ISO at 50.... then you would have the same exposure....
The only things i am going to miss is... joystick, CF cards and the depth knob...
well... miss i think i will use it as a backup body and wildlife.