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Is it worth editing the rating guide page and putting a summary of how you rate it (in the same vein as what's there I suppose), so other raters in the future can see it's really up to them how they rate it?
It does say it's up to the rater, but this round I found myself following the basic guide more than just doing what I did the first time I rated. My ratings tended to go more towards "Strong references and logical arguments" for opiniony/blog/non-fiction things, and images only if I felt it would have made it easier to read/understand the topic.
People can add their own rating method. I'm using an overly objective and analytic method because I make decisions for many devcoiners and don't want to show any bias. That doesn't apply to most other raters, so there's no need to use a strict method.