Nothing to dispute. Cubase was also available for the Atari because Atari was still the big platform for audio at the time. But it was programmed on Windows, for Windows, and the next version of Cubase (the famous one, which introduced VSTs) dropped support for Atari altogether.
Windows version didn't come until 1992, the Atari and Mac versions were released before that (Mac before Atari, however, the precursor by the same company was developed for Atari first).
The Atari ST Cubase 1.0 would like to dispute this. I remember sulking because it wasn't available for my Amiga.