iwindows , unfortunately I can't find a way to achieve the same result with the Bullet behavior. You can add a speed and an angle of motion upon collision with the walls, but the tricky part is to make a bounce depending on the angle of motion that each Ball has. I never quite understood how to do that, perhaps someone else, more clever than me can add to this.
As for the Sine behavior, I think that this will only make things more complicated. Either find a way to apply a speed and an angle of motion with the Bullet behavior, or use Physics that does the calculations for you.