As far as I saw, the only Iphone specific detail was the ability to speak the message instead of typing it.

Or did I overlook something?

You can send SMS and email directly from the Siri panel, also Siri has been added to the system-wide keyboard and you can use dictation even in third-party apps.

Android already does more or less both of these things.

You can dictate to Android phones as well, just push the mic button on the standard keyboard.