Would you place your bet on that team just because they have the momentum on their side, or do you think it’s just an illusion and not really a factor in the outcome?
Thank you for providing context. It is a good observation that I wouldn't have thought about. In my estimation, what I would do is to look at or think about the past games of this particular team. The reason I would do this is because I would like to know if they have this pattern of picking up momentum when the game is half gone and if this momentum turns into a win for them. If it is a pattern that has repeated itself more than three times, then my bet will be on them.
If you are betting live, such factor is very important as you need to know the minute by minute performance of the teams. However, you still need to be conservative in predicting the outcome, as the game can easily change the narrative. It can give you an adrenaline rush to keep on following, but do remember to check the overall picture so you can come up with a smart guess regarding the results.