Is this really the case? I know of no medium or large format lens comparable (in terms of DOF) to the 50 F/1.0 or the 85 F/1.2 for "miniature format" as you call it. While it may be more difficult to get everything in focus with MF/LF, insanely shallow DOF may actually be more feasible with 35mm cameras.
Yes, it really the case. Because of the larger film area "normal" on my 8x10 for example, is around 300mm, and thus I have 300mm DoF at the same distance that I would use a 50mm for with 135. It takes more than a stop or two to make that up, hence part of the usefulness of swings and tilts.