Thing is, iOS is a Operating system created for only 2 devices. The developers working on it have one focus only, making the iPhone and iPad work great.
Android instead has the power but to run on thousands of devices from any brand, any size, any CPU and other specifications.
Now knowing this, ask the question again:
Quote: is it technically possible to make android buttery smooth like ios?
No, but god bless you it's fast for it's great power. iOS might be 0.5ms faster or w/e people have tested, but you won't have such amazing results close to the Android, ever!
People say iOS is better and faster, I say that there phone looks just like 5 million other people's phone. Mine doesn't!