I built a good moveset for one of my pokemon, and to complete it, i must put either Thunder Wave or Confuse Ray, although i must know, which one of the 2 has the higher chance of it's effects occuring?

Thunder Wave is the better move. Confusion relies solely on RNG working in your favour, but Paralysis also halves your opponent's speed, which is preferable in my opinion.I built a good moveset for one of my pokemon, and to complete it, i must put either Thunder Wave or Confuse Ray, although i must know, which one of the 2 has the higher chance of it's effects occuring?