Because a mistaken assumption is that in year 10, people think that Standard English is a whole lot easier to Advanced English which is entirely false like comparing 2u maths to general maths. Standard is very difficult lol because the alligning is so bad and the chances of band 6 is nearly impossible- if not hard. LOL, but a reason could be that standard english is very easy to do top so meaning easier ranks. Remember about 90% of the people in standard are not very bright nor hard workers so yeah free ranks already.