The 4/4 represents 4 panels each of 2 colors. Each panel opposes it's same color.
The 50/50 means that 50% of the ball is one color and the other 50% is another color. You can choose any of the colors available at the time.
The QuadFly, technically the 2/2/2/2 is a 4 color ball which is 2 panels each of the 4 colors.
The SuperFly is a 3 color ball with the primary color being 4 panels of the same color and 2 panels each of 2 colors. Noted as 4/2/2
The SuperFly V2 is also a 3 color ball with the primary color being 4 panels of the same color and 2 panels each of 2 colors, except for 2 panels of the primary color are sewn together as well as the other 2 panels of the primary color (on the back side). This ball is noted as 25/2/25/2. The 25 notes 25% and the 2 refers to 2 panels. - Juggle Cloud Logo shown.
The 5022 is 50%, (4 panels) of the primary color and 2 panels each of 2 colors.