Veratti is slightly better defensively, mostly due to his role, while he has nowhere near the impact in the final 3rd that Pogba has, also related to his role. Veratti is one of the best in his position, while Pogs is THE BEST in his position and player well capable of deciding an outcome with moment of ingenuity. The numbers he's pulling off atm no other midfielder in the world is coming close. Iniesta, Rakitić, Modrić, Silva, and other players occupying similar role are all far behind in terms of direct impact on the game (goals & assists).