I guess what I am really alluding to is that I see so many 5 star ratings for these old films than more recent films. So maybe "classic" was the wrong term. Maybe a classic is different from a 5 star rating. For example, if I was a reviewer, I would give City Of God, Amélie or The Kite Runner 5 stars. But I bet they would only get 4 on the Radio Times Website. Where it seems anything old film in black and white automatically gets 5.
It's interesting that you pick three foreign-language films to illustrate your point, because I think a lot of foreign-language cinema is subject to the same sort of critical over-inflation that you pin on old B&W films.
Don't get me wrong, I like foreign films, but it seems to me that even the most mundane stuff automatically gets higher praise if it comes with subtitles attached.