EGM praised Genesis Ghouls 'n Ghosts very highly, telling us it was a 'virtual carbon-copy' of the coin-op:
EGM #3, Aug-Sept 1989, the hilarious Ironsword - Fabio issue:

page 66:

EGM stretched the truth quite a bit here, although they did not give us an
absolute falsehood, a total baldfaced lie, as Computer & Video Games obviously did, because EGM said 'virtual' before 'carbon-copy', and
EGM later acknowledged the fact that lots of graphics had been cut from the Genesis version, and that even the SuperGrafx version was 'closer' to the coin-op and never said there were no differences.
heh, when I read that EGM mag, that was the first I had EVER heard of Ghouls 'n Ghosts, and at the time I did not even know about the previous game, Ghosts 'n Goblins.
with that said, I actually approve of the term 'carbon-copy', that is, if it can be used in a truthful way-- obviously not in the Genesis GnG example, but that term is a much,
much better description than the horribly over-used phrase 'arcade perfect' which means absolutely nothing and is completely worthless, IMO.