some points to remember
iOS is ultimately the combination of hardware and software - its consistent always
Android is pre-dominantly only software - hardware varies and is incosistent, as a result the user interface often differs device to device
from a whole ecosystem point of view - iOS/Apple has it nailed - they got it right first, and while there are gripes about app review speeds/issues - it for the most part just works and keeps 90% of the bad stuff out
Android more open which is always good - but with open comes more risk, to bad apps/malware/phishing which has to be considered - also i would argue leads to less quality apps because of the need to develop for such a wide range of devices compared to relatively few for iOS
