"From personal experience and from hearing 1st person stories of startups who went Android second, it takes at least 2x to even 3x the amount of time to build an Android app." This differs from my experience. I've work on several large app projects (> 200 000 downloads), and the Android versions have been ready before or at the same time as their iOS counterparts.
Also, the good apps are not made using IB. Fine for prototyping, sure, but not suitable for real world use. Feel free to prove me wrong, and name IB success stories.
Smells like good old FUD spreading to me.