Reading some of the responses in here, it is sad how underappreciated Pogba really is. I think I have already said this but I think Pogba is an elite player and he reminds me of Frank Rijkaard during the first phase of his career. I think he is the best footballer in the premier league.
As for comparing the 2 players, we have to first ask what kind of passing are we talking about? Strategic passing, through balls, switch passes, combination passing? Each pass requires different weight and have different functions.
Another thing to consider is the teams they both play for. Kevin de Bruyne benefits heavily from playing in a system where each player knows the position to occupy.
Put Paul Pogba in the Manchester City team and he would be as spectacular if not more so.
Pogba has to be a lot more creative in his passing than Kevin De Bruyne has to be and Kevin de Bruyne benefits from having players that can receive worse passes better.
Remember, a good pass requires both the receiver and passer to play their part.
Crossing I would say Kevin de Bruyne is better at whipped in crosses whilst Pogba is better at floating crosses but that could be a result of the type of players around them. City have smaller players whilst United have taller players so perhaps this is more of the crosses they utilise more often than saying one is outright better might be circumstantial.
Through ball I would say Pogba is better at the floated through balls over the top whilst kevin de bruyne is better at the lower/grounded through balls. The difference is not by much and perhaps once again based on their roles they display the two types more than the other.
Switch passing which is essentially more about range here. I feel Pogba has a wider passing range but then again we have seen Kevin de Bruyne switch the ball but he doesn't do it that often because manchester city play short passes to move the team towards the opposition goal.
Pogba is better at passing with his weaker foot. A good example will be that pass for Lukaku this week against CSKA Moscow.
https://imgtc.com/w/hqPvyXy
From dead ball situations Kevin de Bruyne is better.
Strategic passing is more difficult to do as I would say both are about the same. Kevin de Bruyne has improved a lot since Pep Guardiola took over as he was a lot more, shall we say, trigger happy with going for killer balls even when his teams were not organised enough to prevent a counter attack from a loss of possession but his improvement has a lot to do with the way the team plays. Pogba is a lot riskier and maybe loses the ball a lot more but I feel that has more to him bearing the burden of manchester united's creativity almost exclusively so he has to attempt a lot riskier plays.
In tighter spaces to get out of a press Pogba is superior at utilising one twos in quick combination to keep pushing the ball forward because of his unique combination of athleticism, ball control and vision. Kevin de Bruyne is great at turning when he is pressed by a single player but when he has to shield the ball and play out of culdesacs he is not as effecient and is prone to losing the ball then getting frustrated.
Overall I would take Paul Pogba over any current midfielder on the planet because he is a very unique player.