I guess I should reiterate how I rate films.
Since September, I've taken to evaluating the movies I watch by two seperate criteria: the overall quality of the movie, and the overall entertainment I get out of it. Therefore, I use two seperate ratings for any given movie
One possible 5/5 rating for quality
One possible 5/5 rating for entertainability
So, for example, if I find a movie only moderately entertaining, it gets 3/5 for overall entertainability. At the same time, though, if I think the movie was made very well in spite of its lack of entertainability, I'll give it a 4 or a 5/5 for overall quality. Combining the two ratings, I end up with a 7 or an 8/10.
In the case of all the movies I've been rating 7/10, I've rated them that way because I found them very well made if not particularily entertaining, or vice-versa.