The complaining is because of this:

  > iOS 5 captured approximately 75% of all iOS users in the same
  > amount of time it took Gingerbread to get 4% of all Android
  > users. Even more astounding is that 15 weeks after launch
  > iOS 4 was at 70% and iOS 5 was at 60% while Ice Cream Sandwich
  > got to just 1% share at the same age.

So 60% vs 1% at the same age since release.