Hello,
Concerning WDWII, the MSX loading screen is unique (the one at genmsx is the same as the one in my Spanish release tape)
http://www.generation-msx.nl/msxdb/softwareinfo/2414
and different from the Spectrum loading screen
http://www.worldofspectrum.org/infoseekid.cgi?id=0005673
Concerning Robocop, I don't think there's a loading screen, just load block 1, found block 1 and then the menu screen:
http://www.generation-msx.nl/msxdb/softwareinfo/2752
Nothing to do with the Spectrum loading screen:
http://www.worldofspectrum.org/infoseekid.cgi?id=0004179
I've checked both TOSEC-MSX WIP files
Robocop (1988)(Ocean Software)(GB)(Side A)[BLOAD'CAS-',R].cas
Robocop (1988)(Ocean Software)(GB)(Side A)[a][BLOAD'CAS-',R][Martos].cas
It's a well-known fact that many Erbe releases had their own ERBE loading screen just loaded before the videogame loading screen. And this ERBE loading screes seem to have been systematically erased from tape dumps. That's a pity since it would help prove whether a .cas file comes from Erbe or it is the Ocean release.
So I can't answer your question unless I could check it against a real tape release but I think the chances in this case are simply no, the Martos version is presumably coming from an Erbe tape. It makes sense and that'd be the most logical conclusion.
Greetings,