Very different opinion:
Firstly, I don't think Puig is that flashy at all.
His positional sense is close to 100% to me; pause the game, and you will see him positioned perfectly between the lines, between the lanes, at all times. He knows when to go forward and when to go towards the ball, nice timing on this. He helps his team mates.
He also knows what's around him, when he can take one, two or more touches. He can solve situations through easy passes, but he can also find team mates between the lines or behind the defence.
He is very effortless in his play, wants the ball often, but keeps out of other players spaces.
Pedri often recieves the ball in tight spaces with no way out, forced to play it backwards or to try some crazy dribble. Pedri is more flashy, but less good as a midfielder for a team that tries to control the game.