Mouse Track Ball For Games Which Is Better - Optical Track Ball Or Optical Mouse?

For games which is better - Optical track ball or optical mouse? - mouse track ball

I mean the outlook for both, but he was not sure how to explain that I am, I compared the two methods. The thumb control compared to manual control. I play mostly RPG, but I play fps. Now I use a touch screen and not easy.

I had hoped that an overview of the people who get used much because I heard if you use once, so precise, but the good thing is that you never at the table.

It is therefore preferable, and why?