[popo]

Are you really using the DxO overall score to determine how "good" a sensor is? Unless your criteria exactly matches theirs, then you need to dig into the details of its characteristics and how they apply.

 

DxO heavily weight low ISO dynamic range, something which Canon lags others in. Once you get to moderate ISO (say, 800) pretty much all APS-C sensors are equal there. Also Canon continue to use a weaker red colour filter in their bayer matrix which likely contributes to a below average colour score too. Are either of these relevant in lens testing here? For tests here, my question would simply be is testing 20MP going to add value over continuing to use the existing 18MP sensor? Not a big difference by any means, but the 20MP sensor could be the new standard for Canon APS-C in a similar way variations of the 18MP sensor have been used almost everywhere for years now.

 

Also a lot of the 7D mk2's price isn't about the sensor. It possibly has the most advanced phase AF system in any APS-C body, plus it has weather sealing pretty much everywhere they can stick some. Those are likely the biggest reasons to look at the 7D mk2.