That's saying if always_succeed (probably for a discipline) then it's 100% chance.
Then 'else' (for all other cases), then it breaks it up into what level the person is using it and has a formula for each group. In the last group there should be a maximum of 95% chance that you are successful. The problem could be in the function that's calling tauntchance. It may just not properly be giving the fail message. But who knows.
This is the code for above lvl 15:
Code:
else {
tauntchance = 50.0; // minimum
tauntchance += tauntchance * (float)GetSkill(TAUNT) / 200.0; // skill modifier
if (tauntchance > 95.0)
tauntchance = 95.0;
or
tauntchance = 50 + (50 * (tauntskill / 200))
which isn't the best formula because at 200 taunt skill you'll have 100% chance, which will be 95% since there's a cap.