Mbappe was not our best player at the world cup, that was Griezmann.
Scored 2 past an horrible Argentine defense.
Scored 1 in a 4 goal game vs an extremely tired Croatian defense that had played 90 extra minutes compared to us.
The only tough defenses we faced were Uruguay and Belgium, he did not score against either side while Griezmann was involved on every goal we scored in both games + the first 2 goals of the final.
Also Mbappe is 2 years older than Haaland so I don't really get the argument here, of course he would have started making noise earlier..
And quite obviously you cannot compare someone who plays for Norway and someone who plays for France, It's not like Mbappe would ever win anything if he played for Norway either.