There is no way to think that the mamiya 35 is sharp, maybe with a P25... maybe with the P45 downsized at 50%... Yes it's cheap but also the results...Of course I can speak about mine... I really hope one day Phase will make a good 35D...Here is what mine 35 mamiya can do with my P45+, very solid tripod, good head, cable release, mirror-up, f11, very carefull focus. No sharpening, no lens correction in CaptureOne, I know I can get more with the lens correction and sharpening, but I think it's better seeing to the file as it is from the camera... The subjcet is pretty difficult, but also the price of a medium format camera is "difficult"
my best