Taken yesterday from Black Point Drive.
Have not posted in a while, here are a few from Black Point Drive I took Friday morning.
Mirrorless is not about better image quality, it's about the ease and likelihood of obtaining better quality images. Those things in mirrorless cameras that increase the obtainable quality, new sensors and better lenses could be put in DSLRs. There are things that can't be put in DSLRs, high burst rates (in some cases 100 or more frames per second) and edge to edge focus points, and electronic viewfinders that show what your captured picture will look like, these are things that make photography easier.
You mentioned the Canon image had higher resolution, because your crops were of the leaves I figured this was where you determined that. You said the Fuji had trouble focusing, the focus in the Fuji image is to the right of the leaves, on the monitor, the leaves are not in focus. Where the image is in focus there is considerable noise which does reduce sharpness.
The Canon 1DX mkIII is three years newer than the Fuji X100F, the sensor is three years newer as is the focus system, things are changing so fast now that three years makes a big difference. If you want to compare mirrorless and DSLR you should compare cameras that are the same age, as far as tech goes. Also you should compare the same sensor size, larger sensors with larger pixel area will have greater dynamic range and lower noise at anything over 400 iso.
I think the biggest problem you had with this comparison was you compared a crop sensor mirrorless to, arguably, one of the best DSLRs ever made.