The quantity in dollars is completely and utterly irrelevant to the validated learning lean startups need. The OP's point is that Android allows you to start learning sooner and faster and to produce a better app which will make you more money.
iOS might make you more money right now if you're lucky enough to chance on an app which matches what users already want, but even that ship may soon be sailing.
Suppose iOS apps pay two times as much on average right now. Tell me: what is two times one-tenth of what you should be earning? You're hobbling yourself by MUCH MORE building an app that inadequately addresses your user's needs.
iOS might make you more money right now if you're lucky enough to chance on an app which matches what users already want, but even that ship may soon be sailing.
Suppose iOS apps pay two times as much on average right now. Tell me: what is two times one-tenth of what you should be earning? You're hobbling yourself by MUCH MORE building an app that inadequately addresses your user's needs.