Exactly. My guess (no data) is that if you lump in ad revenues and in-app sales, then iOS will maintain its lead. I would go so far as to speculate that ads so

Exactly. My guess (no data) is that if you lump in ad revenues and in-app sales, then iOS will maintain its lead. I would go so far as to speculate that ads sold on iOS might convert better, since iPhone users are already spending more money on the platform.