I don't see the problem with that grade? I assumed the score was an addition to the comments, providing a sort of baseline for the words. A song could feel like a 7 overall and you like to point out what the good things are but maybe don't have too much to say about the shortcomings? Just a thought.
I honestly thought Eddieson didn't see shortcomings here. Usually he mentions them in his reviews.
I rather see people mentioning them if they want others to understand their judgement better.
The grades are given to individual songs. I am of the opinion that all grades given to all Maiden songs should be given in relation to each other. If not, it's going to be hard to understand someone's judgement. So, if I read that song A is the worst from album X and song B is the best from album Y, then I still don't know how much someone likes song A in relation to B.
How do I know that? By reading a review, or opinion. And by reading the grade.
Until now that wasn't clear, but Eddieson's last post cleared something things up.
@Eddieson if I understood well, your comments don't always say much about your judgment, but your grades are consequent (in relation to each other).
edit:
One more thing, did you mean you gave this song a 7 (partly) because it's on an album that is generally seen as a low-mark in the band's career? Bad albums can have good songs. I think that album bias should be kept to a minimum when judging an individual song. And general opinions are also matters that have nothing to do with this topic.