As I am in a similar situation for decision (BTW for half a year now, but I had the luxury to have no pressure) I know most of the advantages and disadvantages of both systems - Phamiya and Hasselblad.
I cannot comment on the H60 back as I never used it because it is not available, but I would assume it delivers comparable results to the P65+. So this should not be the point which forces any decision.
If it comes to the system then Phase seems to be more versatile if you need both leaf and focal plane shutter, but totally the other way round if you consider list of available lenses and camera functionality. And I must agree with what was said already here, the H cameras for me handle better than the Phase cameras and the viewfinder is far superior - again my personal view.
SW and post processing. This was for me long time a clear match ball for Phase, as I am C1 user and like this SW. Now in the end of the day I gave up the dream of using only 1 post processing tool, I am currently using several, C1 Pro, Flexcolor (for scanner), Bridge and PS CS4, and maybe some other 1 or 2 packages or at least plug ins and this constantly changes. So actually it does not matter any more to use one additional SW which is Phocus, for the Hasselblad backs. I can easily live with a workflow doing a store and first processing in Phocus and then export into TIFF or DNG and do the further work in whatever I feel is appropriate. I might even go back to LR as this seems to become the tool of choice for M9 files (although I like the C1 results for the M9 better than the LR results). And man, if Apple decides to bring the killer version of Aperture, no problem any longer, I can live with that too and switch within a day (or a few days), as my photos are stored in such a versatile way, that I can find everything without being bound to a specific SW packages.
So short answer after long explanation - SW was so far my struggling point, this is gone, so I am free to decide again from the camera/lens perspective. And guess what, Hasselblad is here the winner for me. And this also takes into account availability, quality, knowledge, effectiveness and friendlyness of support and of course pricing. And especially if it comes to prices then Hasselblad is another winner!
My 5c