The entire point of medium format, and medium format digital is extreme, and, superior resolution. ALL of the available lenses are far and above superior, OPTICALLY, to their 35mm format counterparts.
As far as the price goes, I know little about hasselblad stuff(other than, I don't like it...) but the same statement adobe applies to all of hasselblad gear. Optically, its wonderful, The software you are forced to use, Phocus.... is a pain.
As far as studio work goes, Nothing is superior to a medium format digital camera. Sure, a 35mm format camera is easier to handle, but if you are competent, what ever that may means, the medium format digital camera is THE way to go in the studio.
I use a Phaseone H25(v mount only...) with an adapter plate to a Mamiya RZ67. I HATE the complication of dealign with all of it, but man, when all of the stuff is set up, it makes nailing the shot SO easy.
File sizes are gigantic, TIFFs are in the neighborhood of 250 megabits.... each...
As far as better colors are concerned, meh, all lenses render colors about the same up to some white balance... anyone who claims other wise just needs to show me a color spectrum for each color and I **may** be convinced....
what IS FAR FAR more important is the fact that the BIT DEPTH is larger than in a 35mm format(for now...for now...). You are given significantly more lattitude when editing - which is where color matters most.
I would strongly recommend that you call Doug Peterson at digital transitions, tomorrow and pick his brain.
Ive only gone back to a 35mm camera for the price...I could not turn down a 5D2 for $1000 when I have a 70-200mm sitting in the closet... and I just needed to get out and shoot again. I still have the phase, and it kicks butt in the studio.
Id recommend the mamiya/phaseone platform over the hasselblad system because its more "open" and capture one can tether to your iPhone/iPad, which makes tethering in a studio extremely, extremely useful. I still need to get an iPad, but being able to see what you shoot with minimal delay show up on your iDevice is pretty nifty...