+1.5 means the team you bet on will have an advantage with 1.5 goals. So if this team doesn't lose with more than one goal difference, or just make a draw or win, it will mean that you win the bet.
Handicap 1: You can back your team with a (+1) handicap, which means that your team will have a 1 goal advantage in the game, or (-1) means that your team will have to win with a score difference of more than 1 to win. Handicap -1.5: Your team will win if the score difference is two and more goals.
