I am also a µFT-shooter, e.g. OM-1 with the 300/4. I named the 150-400, a lens which certainly doesn't have a 35mm counterpart. At which point the "quality" advantage of a 35mm sensor becomes moot. And of course also, if one doesn't have a lens to match my more affordable 300/4. Assuming the 35mm shooter is even willing to carry the equipment :p. The camera body size of course does no longer make a difference, but the lens size still does.