Maybe you aren't used to how far the MFDB files can be pushed with all of that data? The Canon files head straight to their blown limits (highlight and shadow) much faster than your 12-stop, 16-bit files. I would suggest you keep at it, or try different tools. There should be nothing fundamentally different about the Hasselblad data. Perhaps it's the limits of your RAW converter (if you're doing the edits within there), if you are working in Photoshop with a converted Raw file, then the playing field is the same as Canon. Perhaps try converting your image from 16-bits to 8-bits in photoshop and see if that gets you where you want to be?
If none of that playing around gets you satisfactory results, perhaps it's the particular subject you were shooting. Otherwise post some image examples and we can discuss more. I don't think anyone really knows what is "great tonality" to you.
EDIT: I see you are using gradient adjustment layers... What about using the gradient adjustment layer, with additional Curves adjustment to fine tune? Or perhaps try the Black and White adjustment layer (new in CS3), it has much the same fine tuning capabilities for BW conversion that Lightroom does.