CCDs are still larger. But when full-frame CMOS arrives I think those that want the best will want that, but Phase One has clearly indicated with the current IQ250 pricing that full-frame CMOS will be more expensive than the current full-frame CCD.
So those that want to save some money and don't need the superior CMOS performance may buy a CCD back instead.
Then we have the relatively poor tech cam performance due to poor wide angular response, I think this test masks the color cast issues a bit since it's hard to see slight shifts in the colorful ceiling but I'm quite sure they're there. Just compare the colors in the ceiling of the IQ260 32 HR image with the IQ250 32 HR image. Current CCDs are clearly better in this aspect, but I don't know if it's an inherent problem of CMOS or if it's just about pixel size. If large CMOS gets the backside illuminated manufacturing process we could see a drastic improvement in angular response. I hope for that.
My guess from the current result is that the 32HR is barely usable if you need color stability when shifted, but that the 40mm Rodenstock could be okay. So a full-frame CMOS with the current sensor technology and pixel pitch would not be able to go wider than 40mm with shifting. For me as a landscape photographer that would be okay, but an interior photographer I would guess would want the 32 to work well too.
Color will also be a factor, there's a lot of mythology and mystery around the magic of "CCD color", if the CMOS CFAs + profiling won't turn out as pleasing as the current CCDs, CCDs may still have a chance, but then mainly in portrait I think, not in tech cam space. At some point CMOS will take over of course, just as it has taken over in DSLR space. I hope it's sooner rather than later so it can trickle down the second hand market to my hands within reasonable time :-).
(I'd rather want a 48x36mm sensor that works with the SK35mm, I find that to be a more balanced system, I think about more values than just resolving power, but I don't think we'll see such a thing, as I think resolving power is the main selling point for these type of cameras.)