ah ok! ... this seems a little strange, but ok! thank you for the answer!
The ranking has been changed today. There's now a ratio between number of views and number of downloads (with equal weight). That meens that table with a big download count and small "view count" will be higher in the list (and vice versa). Of course, table with high values for both are better placed than other.
Also, we can't rely on the user ratings, because it's totaly biaised (too many 5 stars).
We should have had a button like / neutral / dislike notation (now it's too late to change this, not really important).