I think it is definitely a factor to consider especially when you take in consideration any team sports, in general. However, it all boils down to your favorite/loyal team whenever you gamble. There was a study conducted that majority of the players who gamble on team sports bet on their favorite/loyal team despite knowing that the team that they are against are the stronger ones.
This not only applies to Football but to all sports that require a team effort, but it's hard to pull up a win if the team does not have strong players within them, each player has a role to play to make the play works, and come out with a win, I'm betting on basketball and I have not seen a champion team without a strong player, great team efforts can deliver a good play but they need good players to implement that play.
In soccer a player can't remain at his top level during 90 minutes, moreover the field is very large and one single player can't be everywhere, so I think the team is more important than individualities in soccer.
There is a reason on why it is called 'team sports' in the first place. Even if a single player is well-known for his skills, he alone, cannot win the game by itself. Team sports rely on everyone's effort and skill in order to achieve maximum efficiency and output.
In NBA, lots of individually skilled players are distributed across many teams. I remember the 2010-2014 Miami Heat, where the Big Three (LBJ, Wade, and Bosh) won, although they were the most dominant team in the league, they still need to rely on their team (especially Ray Allen) in order to win the playoffs!