How to calculate The critical damage base on base damage?

Actually, I have 2 choice : 10% basic damage and 10% critical damage. Which is better?

Depoends on the class. But the title of the topic doesnt rly have anything to do with ur question. Or maybe Im missing smth here...

Ok let do some math here .

If i Guest Right, Crit dam = Base dam*xx +A ( xx here is a constant for each character, A here is a constant for skill or SA of weapon , for example : Crit dam of base human fighter lev 1 = base dam * 2 +0).

Then if we go 10% might, crit dam will be : base dam *110%*xx + A.
Then if we go 10% crit dam, crit dam will be : (base dam *xx + A)*110%= basedam*110%*xx+ A*110%

You can see : crit dam when we go 10%crit will be lagger by an amount of A*10%, which is about 200 base physical damage.

Obviously, Not always the times we do a crit.

Then I wonder if my calculation is right and wherever it's right or wrong, which is better btw 10% might or 10% death whisper?

As I said, depends on ur char. The calculations are a bit confusing but I think they're right...
If u have a char that relies on crits and has a high crit rate, then go for crit damage (archer, dagger, tyrant, destro). If u have a char with low crit rate then go for patk (dwarfs, warlord etc)