To address the question of the thread (which so quickly seems to be a way to air out dissatisfaction from a few) the two systems produce extremely crisp imagery, I think it is important to recognize that the integration advances present in the H4D may be the most apparent technological difference.
Specifically the ability to lock the focal plane and recompose, then real-time compensation for the new composition to retain the original key focus.
As mentioned, the HCD 28mm and HCD 35-90 Zoom (very useful lens, btw) are designed for the H3D and H4D systems, with the remaining lenses (35mm, 50mm, 80mm, 100mm, 120macro, 150mm, 210mm, 300mm, 50-110 Zoom, 1.7 teleconverter, 13-26-52mm extension tubes, CF-lens adaptor and Tilt-shift HTS lens adaptor) for the entire H-series, including the H2/P45+ configuration.
Photo assistants in the major markets that I have shown Phocus (and subsequently shot with) they are very comfortable within minutes - yes, it is used regularly; the user interface is very familiar to anyone who has experience shooting with C1 with the tools on the other side from each other.
In some cases it it faster for certain tasks, but let's not split hairs - they are both recommended, used, and deployed by experienced shooters. Some of the grumbling I have seen is from those who have never used it; not exactly a great source to base a decision...
Why guess about it? Download Phocus and check it out yourself
- there are minimum hardware requirements, but who would install on a under-powered computer? Video Time!