Gura Gura no Mi is a producing Paramecia-class devil fruit just like Doflamingo's devil fruit as both produce shock waves/strings so it makes since that both grant the same effect when awakened.
We saw Whitebeard do this in Marineford:
He generated these shock waves without cracking the air as he usually do in melee attacks and yet its AoE was much bigger, if this isn't the awakening then what do you all think it would be?