A junior player may wish to emulate the marquee player by obtaining weapons or other items used by the marquee player.
The microtransaction engine may match the junior player with a player that is a highly skilled sniper in the game.
For instance, the microtransaction engine may match a more expert/marquee player with a junior player to encourage the junior player to make game-related purchases of items possessed/used by the marquee player.
According to a U.S. patent recently granted to Activision, the company could already have special tech built into its matchmaking engine designed to trick players into spending more on in-game items.