He blinked to hg to secure the kill. He piked to low ground so he's not out of position (tier 2 tower is still up). By the time his team was in position, he went back up to avoid high ground misses. His support even placed a ward for info (even if it was under a tier 3 tower). I agree that it's not the most impressive play but minute details like this are why they are so much better than us.
