Weapon Skill Secondary Attribute Modifier

WSC
WSC is the Weapon Skill secondary modifier Usually every weapon skills have 1 or 2 default stats for WSC. For example, All archery WS have STR_16% and AGI_25% which means 16% of your STR and 25% of your AGI will be calculated as base damage when performing all archery  WS
 * There's variable α(Alpha) which scales down your WSC value as you level up higher.
 * Here's the list of &alpha; for each level (range)
 * Lv75 ... 0.83
 * Lv74 ... 0.83
 * Lv73 ... 0.84
 * Lv72 ... 0.84
 * Lv67 ... 0.86 or 0.87 (Maybe 0.87)
 * Lv60 ... 0.90 or 0.91 (Maybe 0.90)
 * Lv40 ... 0.94 ～ 0.94
 * Lv37 ... 0.94 ～ 0.99
 * Lv31 ... 0.94 ～ 0.99


 * So, the WSC calculation is
 * WSC = floor(stat_percentage_1 x stat_1 + (stat_percentage_2 x stat_2)) x &alpha;