Quick question: What does media traffic count? The sales? The airplay? cause i'm quite confused.

Album sales in 95% of countries.

Single chart is based on a mixture of sales and airplay (very flawed) and they don't count 100% of the sales in South Korea either.

I've been reading their forums and the administrator said that sales compromise something like 70% of Track chart with 30% being airplay.

Albums are obviously 100% sales.

For their singles chart, 1 point equals about 70% of sales and about 30% of airplay. It differs from track to track.

For the album chart, they obviously count only sales, even though they don't include quite a few countries.