I don't apply NR to my images.
If you use ACR and do not explicitly reduce it to 0, you are using it. With DPP or in camera JPEG it doesn't matter if you choose the lowest setting, some is applied any way. You can get away with truly zero NR in low ISO images that are perfectly exposed, but if you're not taking advantage of it at higher ISOs then you are literally handicapping your output vs. cheaper and older sensors that are optimally post processed.
I can't help but feel that I'm missing something. If you were working with raw files from both cameras, wouldn't the 1DIV give you a cleaner image in the final result because the RAW image itself is cleaner to begin with?
Not necessarily because the relationship between NR and detail is not a simple linear one. If you apply X NR to a RAW file to achieve a certain noise and detail level, you may be able to apply X+Y NR to a more noisy RAW file to end up with the same result. Depends on the gap between sensors, the NR algorithms, the settings you feed those algorithms, and also the image itself.
Comparing swatches that have been run through a noise reduction process means your no longer comparing the most objective data.
I was comparing the IR studio scene and looking at the entire scene.
Sorry to burst your bubble here D by disproving your theory that the 70D has the same low noise as the 1D IV, but there it is in gray, black, and blue.
I'm sorry you didn't understand my post and still don't realize how pointless and irrelevant unprocessed gray patches are. In the real world making real images 70D IQ is indistinguishable from 1D4 IQ until very high ISOs where it's still fairly close. That's sufficient to answer the question posted by unfocused.
Unless, of course, unfocused will be primarily shooting patches in RAW and converting with NR completely off. In which case he should forget about the 7D2 and 1D4 and buy a Nikon or a Sony.