Enthusiam increases the performance of your players. A high number will give your team a better game, better chance of winning. Crunch Time attitude will boost this game, but decreases enthusiam for later games. Take It Easy is the opposite - it hurts this game, but increases enthusiasm for other games.
Crunch Time increases enthusiasm today, decreases next game.
Take It Easy decreases enthusiam today, increases next game.
Your team against equal performs better, if enthusiam is higher.
Attitude is this game only. Enthusiam is long term pattern.