The specific passage from Developing Skill, referring directly to Mbappe and Dembele.
"The benefits to having multiple players who are comfortable one versus one (or against greater odds) really start to show when the players begin to mature. If every player is competent defending one on one, a team will be able to defend with solidity. If a number of players on a team are excellent when taking on defenders that is when real advantages are created. In June 2017, France defeated England in a friendly at the Stade de France, 3-2. France had a player sent off but were still able to attack very effectively. The reason for this was that they had Ousmane Dembélé, Kylian Mbappé, Thomas Lemar and Paul Pogba; all players with wonderful dribbling ability. Not all one versus ones are equal. When the attacker is superior to the defender, a one versus one becomes an attacking overload. France effectively had four overloads despite being a player down."