DrBong, yeah you can be quite sure, I have been looking for the info on the mags:
Micromania 11 April 89
Powerplay Atari ST review
+ Advert of the game distributed by MCM
Micromania 12 May 89
Powerplay Amstrad CPC review (here they said although the game was some years old, is now when the spanish translations are ready)
Micromania 13 June 89
Powerplay Amiga mini-review (were is said that the game "has use good of Amiga graphics and sound capabilities" (these mini-reviews were used just to tell you if the game was very similar or not to a previously version reviewed) an image of the enhanced version is shown)
+ A shop catalog with prices for ST and Amiga, and they are the same price (the standard price for MCM games with a hard plastic case package (quite good indeed)), the most important, no two versions found for the Amiga catalog.
+Interview with Max Taylor from Arcana, telling the distribution agreement with MCM.