Good demo. I like that they showed both at similar settings, since lots of folks would assume the Mini sounds the same but in a smaller package.
this is what I heard:
The Mini had a much nicer clean tone. The normal Recto sounded harsh, terrible.
The Mini had more upper mids, whereas the normal Recto was more scooped in the mids, making it sound shallow.
Although, the Mini had less boldness on the bottom end, compared to the normal Recto which sounded much deeper.
I reckon both would sound great if ran in stereo.