For those that might be interested, I have just posted a comprehensive comparison of the EOS 70D and 7D dslr bodies. In the text, I tried to cover pretty much everything that might be of importance to nature or sport photographers that may be wondering which camera is better.
The link to the review is here: http://www.grantatkinson.com/blog/ca...os-7d-compared
In short, the 70D offers better image quality, and added versatility whilst the 7D has a speed, buffer and actual build advantage.
I have also included lots of images taken with both cameras, and shared my own experiences that come from using both of them in the field.