Comparing FF vs. APS-C

[Jon Ruyle]

But just from using the cameras I have it is very evident to me that in equal situations the 7D has more noise than the 5D II.

By "equal situations", do you mean equal f-numbers, or equal in the sense John did his experiment (with the larger sensor stopped down)? At the same f-number, the larger sensor of course has a major advantage.

It might be worth looking at how DXO did their comparison to see if it is legitimate.

The DXO description of their tests looks good to me, but that does not mean they did not make mistakes.