Not to say shatterdive isn't the strongest ability in the game but this may just be a case of Bungie's physics doing whatever it wants. In the week 1 shattered map, boss room, you can't climb above where the Techeun spawns because of a push wall. If it pushes you down onto a slope it can yeet you across the entire map. Also guardians can fall an infinite distance and survive as long as we land on a flat surface. If we land on a slope, even if we only fall like 20 feet, instant death. It sounds like the hunter shatter just pushed you, that combined with the speed burst from shoulder charge... I wonder if this could be used to speed run stuff.