Worldwide chart is very unfear. Why? Cuz most of videos are coming from different countries by population. YT is not the same popular in every country... And we can see that - Spain and India are subscribe for 1st place every time.
WorldWide Chart is too bad. Lets assume we have big countries like UK or GM... So they do millions views and countries like RO or AL are so screwed.. I think...
The idea is to be shown most popular videos. Thats our point. So, you couldn't find Lady Gaga in our database, because we are looking for a bit-popular artists.