I don't use a braille display with a phone myself, but still I want to demonstrate the same thing as you, that Android can be as good as IOS. Though admitedly it's also because of Apple's last design choice which, to me, are more about design than practicality. I really think the IPhones, and especially the IPhone X, are overpriced for what they are.
But I do respect Apple for the fact that if today blind people are able to choose from many smartphone models from various brand just as the sighted do, it's without much doubt thanks to Apple's investment in accessibility. And the fact other brands are united under the Android banner, of course.
Now, if I refer to some discussions in the Blindphones group and even the Eyes-Free group, it seems the angular gesture, or more exactly the absence of multitouch gesture in Talkback, is what turns of most people from fully looking at which choice they have. To be honest that makes me sad, and I really hope multitouch gessture will be implemented at some point in Talkback, as an alternative to what Talkback already has.
Aside of maybe some accessibility flaws that some manufacturer's user interface may contain, it seems to be the last step to solve before most blind users fully realize the variety of devices they can choose from. Not that everyone should switch to Android as I do, but it's clear what we are living would have been unthinkable not so long ago.
The only thing I'd be unable to speak of as I didn't use my IPhone for many things aside calling and texting, is how some current apps compare on both OS. At least when I'll get my OnePlus 5T, I intend to tap into more of it's potential than with my old, obsolete IPhone 4S.