Compare Belgium and Italy organisation. Belgium were opened up a lot by Denmark, attack only clicked when KDB came on otherwise they lose that match against mediocre opposition. Italy off the ball come back immediately and make a back 6, they press hard out of possession and on attack the midfielders get into the box. Only France have that level of organisation and tactics furthermore, they have the best squad. Spain and Portugal have very talented squads but Spain are tactically weak, Portugal are much better organised so I expect them to do better out of the two. Teams that function well together without relying on an individual will always do better, doubling up on Lukaku and KDB will be enough to eliminate Belgium.