I'm curious of what the general consensus is if we made it [pun] more apples to apples by comparing current state Nexus 5x/6p @ Android 6.x vs iPhone 6s @ iOS

I'm curious of what the general consensus is if we made it [pun] more apples to apples by comparing current state Nexus 5x/6p @ Android 6.x vs iPhone 6s @ iOS 9.x? Android, today, seems to be riddled with the legacy a la Microsoft - wherein XP is still at large, seemingly a similar problem with Android 3/4/5 still in use... But is the cutting edge comparison really that much more skewed in Apple's favor? I'd say that prior to the improvement on patch cycles as of recent in Android - iOS had an edge, but - outside of the walled garden I'm still very curious on the quality between the two with specific regard to the SDLC and resulting output.