Alright, I asked ASI to correct the numbers if they are wrong.

I did also read the Telegraph's article about Michael Burrage's book on this [0] which said something similar, however I trust their ability to report less than the ASI:

  > Our free access is not free access at all. Arguing for the single
  > market on the grounds that you can avoid a 3 per cent tariff
  > by actually paying 7 per cent fee is mis-selling on a scale
  > that dwarfs the PPI scandal.

[0] http://www.telegraph.co.uk/news/2016/06/13/not-only-can-brit...