for warrior & melee vs warrior

+1 def =
+0.04miss
-0.04crit
+0.04parry
+0.04dodge
+0.04block

+100 def =
+4miss
-4crit
+4parry
+4dodge
+4block

hit 75% crit 20% average damage 100 (100 hits)
300def 10%dodge 10%parry
25miss
7.5parry
7.5dodge
15crit
45hit
15*200+45*100=7500

400def 14%dodge 14%parry
29miss
9.94parry
9.94dodge
11.84crit
38.28hit
11.84*200+38.24*100=6192=82.56%*7500

结论
+100 def skill lv = 增加HP 21.124%
比较
defense stance -10% damage = 增加 11.111% HP

parry dodge block都只能是正面
但是现在有bug，背面也会出parry dodge，但是概率很低
stun中没有parry dodge block，同样有低概率bug

根据rogue论坛的篮字，说
先算miss和crit，比如说75%hit 20%的crit 100hits
25 miss 20 crit 55 hit

然后再算crit和hit的parry dodge block
crit还是会被dodge和parry掉的