Thomas, would you like to expand on that? Are you saying medium and large format made no difference to the quality of your pictures or that there were no improvements in compositions/impact/whatever? I'm not sure what what you mean by "none the better" but I'm interested, because I've just spent a day in the bush shooting 35mm and really loved the ease of it compared with lugging my Mamiya kit around. I'm beginning to wonder, too. I've just returned to the fold after some years of shooting digital and my first impulse was to go MF. But now I'm getting such a buzz out of using all my old manual prime Pentax lenses at their "proper" focal length on my sweetly simple MX and MG and the joyful simplicity of a Retina 1b I picked up recently. I've just started building my darkroom and I guess when I start printing MF and 35mm that'll be the moment of truth, but right now 35mm is giving me goose bumps.
Well, 'quality' is such a subjective term that I can only give my own account here, and I will try to explain so it's clear.
What it boils down to is that I think most photographers spend way too much time on technical aspects of the process, and perhaps not enough time exposing film and printing it.
Over the years I have learned a thing or two about printing, and am now at a level where I can make prints that I am 99% happy with. There is always room for improvement, but I believe it's here where some people continue chasing the last percent, and others focus on developing other aspects of photography, like better use of light, gesture, framing, mood, emotion, etc. I think that I belong mostly in the group that tries to always improve how I see and perceive photographs, and have since a while back left that 1% behind. (Some will claim they do both, and if they can, more power to them. I don't have the urge, or the time to).
So, about quality. I am often commended for the print quality of my photographs. Many can't believe that they view prints from 35mm originals. This isn't an attempt to promote my skills as a printer - in the company of some of the truly great printers here at APUG, it would be foolish to. But the point it, I think my print quality is pretty good.
The argument then about using the Hasselblad instead of the Pentax or Leica takes on a different meaning. I use the Leica a lot; it's employed for portraits and for when I grab a camera that's easy to carry to take along. If I need to get really close, I use the Pentax and extension tubes. I still use my Hasselblad, but it isn't really for anything other than a square negative, exchangeable backs, and the beautiful way in which the lenses 'draw' the picture. It doesn't feel at all necessary, in terms of raw picture quality, to use the Hasselblad (or a sheet film camera) for the sake of just raw picture quality. That isn't even a consideration.
The end result is that I can make 16x20" prints from 35mm negatives that I am completely happy with, while using a camera that I can hand hold for the most part, be quick and swift with, react to moments that otherwise just flow right past me without enough time to set up a 4x5" camera on a tripod. That to me is tremendously powerful, and the freedom it allows me to just focus on the pictures I value 10,000 times more than a relatively small gain in raw picture quality, and the added benefit is that since I'm more flexible with HOW I can use the camera, I find that I record more pictures that I am happy with. That's what I want my photography to be about, getting prints that I am happy with. The rest is highly immaterial by comparison, and that's what I mean when I say that a larger negative doesn't insure better pictures or better prints. It's a combination of print quality, ease of use, and the ability to actually get the shot before it's too late.
That's how I live in my photography life, and this uncluttered existence, where I don't think so much in terms of ultimate print quality, has liberated how I work, and I am happier than ever with both my results, and the shooting itself.