<div id="linkdxomark">This a comment for <a href="http://www.dxomark.com/Lenses/Sony/Sony-FE-Carl-Zeiss-Sonnar-T-STAR-55mm-F18">this page on the website</a></div>I hadn't looked before this review of the difference between the APSC 24MP NEX7 and the 36MP FF A7r performance. The Sharpness jumps from 15MP on the NEX7 to 29MP on the A7r. Perhaps Sony can create the 55mm OSS in full frame...
Here is the interesting comparison:
You have target closer to the body when shooting resolution test target with FF. This means the resolution task is λ times easier with FF, where λ is the ratio of distances to the target between APS-C and FF (should be about crop factor, that is 1.53). Then, A7r has sqrt(1.5)≈1.22 times higher resolution sensor. Now we have 1.53*1.22=1.86. And NEX-7 has AA filter, so yet another boost for A7r.