Damage Calculation

[tbontob]

Nother hint.

Hint #1 Someone has indirectly touched on the "error".
Hint #2 The player who "mechanically" applies the attack and defense factors may (or may not) calculate an incorrect hit probability.
Hint #3 It is not a punctuation error, grammar error, spelling error or additional lines.

But if you find a punctuation error, grammar error, spelling error, please tell me! It will make for easier reading. (besides helping me to avoid appearing like a do-do for posterity.

And help. I am running out of hints which will not give away the store!