What the dpreview guy says is true! The smaller the format the larger the depth of field at a given aperture.
No, that is a gross assumption based on as Q. G. said a long string of assumptions. If you really want to understand this, you need to get a good book on optics. Once you fully understand the optics, you will see why so many here are telling you that the dpreview article is not correct.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.