Idea: Would adding a system that allowed you to rate a given feature of a given engine as better or worse than a similar feature of another engine work? To be fair, a rating for similar or dissimilar could also be added so that features that don't compare well (apples vs. oranges stuff) can also be identified as such to suggest the reader do their own research on them. A third rating also to allow the user to signify their experience with that given feature could also be added, too, to indicate further whether they really know what they're talking about or are just making a casual guess (with maybe a penalty for dishonesty somehow? I dunno...).
Those would be the kinds of information that I could really use if I were to be forced to rely on the feedback of others to make a decision.