It has a lot in common with the Leica version, but I am not sure about the mechanical side, although I do believe the meter and shutter are common to both.
The Rokkor lenses will probably be as good as Leica ones. (I hear someone calling me a heretic for that statement) However the Leica Reflex 35/70 - F3.5 and the 70/210 - F4 (both constant aperture) were identical optically to the Minolta versions, but had beefed up mechanics in the focussing and zooming. I doubt if anyone will actually notice unless they were put onto an optical bench.
They sell for a bit less than the Leica versions here in UK but tend to keep their value anyway, but at their own level. A bit of snobbery really.