Hi! The forum is actually a very good resource for information.

Here are two threads that have talked a little more detail regarding it. Keep in mind there is no exact % chance at the moment, but it does give an idea regarding what they mean.

Thread 1

Thread 2

A chance, small chance, high chance, and very high chance all means exactly what it says, it is a potential chance to hit while also being affected by the Combo Stat. The higher your combo stat is to the opponent, the higher the chance you hit. For example, a small chance would have a smaller base value chance to hit than a high chance.

Fixed chance on the other hand is not affected by Combo Stat and Certain hit is exactly what it says, it is certain to hit unless otherwise stated by a ninja's ability.

Hope this helps!

Haha no problem. Appreciate you helping other people in the community. It is always nice to see xD

You were way faster than me, only noticed after I replied T_T haha