All you have to do is look at the shifts, forget the center.
The 32mm had no Cf, thus the lightfall off to the shifted edge is not balanced as well as the CF would allow so the LCC is working hard.
NET, the 260, which appears to be shot a ISO140 which is the base for long exposure looks pretty darn bad, excessive noise and really the shift is not useable unless you really down rez the file to around where sensor plus would get you. On center I can get the box where the shadows are pretty harsh to look OK, but as Eric has shown the 250 is cleaner here, but the shift is where the real difference is. Just look at the large wall section to the far left. With the 260 it's all pretty much noise and no structure.
The 260 also has more aliasing on the X frames that cover the books, way more. It's very harsh on the segments where you are looking down them not head on but even head on they appear to be made with beads of different colored material.
The 260 file also shows lots of (way to many IMO) stuck pixels which really surprised me. They are evident anywhere the image is dark or in shade and show up mainly as blue.
The 250 is cleaner throughout, but I feel the transitions of the details are smoother, take a look at the beautiful inlaid vertical strips at the edges, they look much better on the 250, also look under the cases in the middle of the shot, again much cleaner.
On the 250 shift it's got some banding, which I actually have come to expect from this type of pull with CMOS, however you can clean that up.
My net opinion, if all you wanted was a center shot, you can make either test work, however if you were after a FULL RESOLUTION composite, you just can't use the shifted parts of the 260. I didn't look at the right shift as it should be the same. Doug shot these at 2 minutes as I remember so to get a better shifted image on the 260, he would have had to 2x the exposure and maybe do longer, which I believe would have blown the rest of the image out.
Since this is a Sony chip, and I guess the their processor, it's clear that they have a strong advantage in chips. I saw similar results when I first shot the D800 and now it's the same in the MD world. For me it's the noise and lack of use of the shift. If you dig way way way down, you might find a spot where the color is better on the CCD from the 260, but I can't see it.
The 250 file non OE still pulls up very well on the shift.
To keep a 260 is now quite a bit harder a decision to make. I am not a big user of rise and fall, but these pretty much look the same on the 260. I will try to put some images together as Eric did later tonight.
Paul C