Respectable indeed, but I still think something might be wrong. Tim Parkin tested his Plustek 120 and found that it had between 4500 - 5300 true dpi depending on the scan direction. That would put it ahead of the Flextight which "only" does 3200 dpi scans of anthing larger than 6x4.5 in medium format (correct me if I'm wrong).
I have no doubt that the flextight has better Dmax, I have seen some fantastic scans from a single pass scan made on the Flextight, wheres the plustek would require multiple passes to record the same detail in dense areas of the film.
I'm sure the flextight is the better scanner on most respects, but then again, it should be given the price! 🙂
Edit: Now I should add that what I'm writing is based on the Flextight II, an older model than your 949, but it was my impression that not much had changed between these scanners, and that they used the same superb optics. I saw that you found the Plusteks optics poorer in comparison in another thread, which seems entirely possible, however you also stated that they were inferior to the Coolscan 9000, and this I find quite puzzling. I have found my scans consistently sharper than the ones from a friends 9000. Do you have any way of testing the focus on the plustek? Would it be possible for you to make a comparison of the PLustek and the Imacon/Hasselblad, and upload the RAW files?