1) Lagging is still frustratingly there. Don't know if it's improved in the latest version.

2) Most of my Android devices have come with a default mail app that works perfectly with Exchange.

3) I've dropped my last 4 Android devices frequently and they've never broken (not saying they won't, they do, but it takes a bit of gusto to do it). I don't know a single iPhone user who hasn't had to replace their phone once a generation because they dropped it and the glass broke.

4) Keyboard input is definitely not the problem on Android, there are more keyboards available, and several are widely regarded as better than iOS's. Swype like keyboarding, which I think the new default Google one has supported for a while, is transformative.

1) Lag is mostly a thing of the past now, but depends a lot on the hardware. My Nexus 4 rarely lags, whereas my Nexus 7 (2012) lags all the time. Some poorly made apps can also cause lag (Facebook used to be pretty bad).

2) It works fine with Exchange, but is lacking in features. It has, however, received a major overhaul in KitKat, so perhaps it's better now (haven't tried it yet).

3) That is just meaningless anecdote. Conversly, I'm seeing as many (possibly more) shattered S3 and S4 devices as iPhones. I've owned a 3Gs, a 4s and a 5 and not had to replace the glass ever.

4) So if there is a market for keyboards, it would suggest that there is a problem with the default one! I totally accept the point that Android has the benefit of selecting which keyboard the use wishes to use, but to use a term you seem obsessed with, you are moving the goalposts.

Look at Swiftkey my friend and you'll never want to use an iPhone keyboard again. But you'll have to since Apple does not allow alternative keyboards.

Comparing stock Android to stock iPhone is missing the point.