The truth is, the gameplay in the World Cup update is exactly the same as the gameplay in the main FIFA 18 game, Andrei Lazarescu, producer of the Switch version of FIFA and the World Cup update confirmed to me at E3.
When EA Sports released the free World Cup update for FIFA 18, some players thought it played differently compared to the main game.
Loads of people reckon the FIFA 18 World Cup update has different gameplay than FIFA 18, but it really doesn’t.
These players, who suspected EA Sports had tinkered with the gameplay of FIFA 18 for the World Cup update on the quiet, claimed it felt slower, with nerfed dribbling and passing.