actually, most 35mm telephoto lenses are cover Medium format size.I've owned C/Y zeiss 135mm F2.0. It delivers incredible image quality even edges in medium format size.
Many 35mm lenses do cover an image circle wide enough to project on an MF sensor (remember the Horseman Digiflex?). In this case however the wonder is on the particular lenses when used with MF cameras with mirror box... (on which a 35mm lens can't be used at all).