What I love the most about Mane (there's a lot I love) is that (and it might be just an impression here) he is a big games player. When the game is tight, you're facing a strong team and you know one goal will be the difference Mane is, more often than not, very alive and will make the difference.
Don't get me wrong, Bobby and Salah are also big games players, but Mane seems to thrive on that. Won't score in a 3-0 win at Soton or a 4-0 win at home against a relegation contender but then will show up at the 85th minute to break the deadlock away from home against a stubborn Burnley or something like that and effectively make sure you keep going or score away from home against Bayern in the CL, etc.
Top top player.