yep. I heve already post some my thoughts about those samples in other topic, but now i realize that there is a topic about it so...
I am a canon user from 1 year. I switched from Nikon. Bad decision-YES!. I waited for 5d3 in order to made my final decsion to stay or go away from Canon.
Speaking about the main topic...
When I firstly saw a 5d3 sample I was in shock-how is it possible? It looks like crap from good high mpix compact camera, not a 3500$ dlsr. There is no sharpness at all. Everything looks crappy and very soft, even photos developed from Raws (animal photo). Every photo looks like after strong in camera pp. Please take a closer look on eyebrows, lashes, eyes, hair. Guys-it's drama. Than I took a look on D800 (nor E) samples-amazing. I am not a tech guys, but photographer, but from I have seen the decision is obvious and clear. I think thats not about resolution, it's about whole things related with image processing and sensor. 5d3 photos lacs details and sharpness, they look strange in 100% view. What is strange also is that I think that photos from my 5d2 looks better in terms of sharpness and detail. I am frustrated due to being already invested in Canon gear, but I know I will probably sell me lens and switch back to Nikon even losing some money. I would be very happy to see other point of views, especially from more advanced or professional photographers.