Info about Incantation Samurai card

After several experiments and observations i conclude that Incantation Samurai is useless against player.
Below is the test i carried while using Incantation Samurai plus other observations:

(1) When attacking using normal attack with my sniper, normal hit only damage around 'xxx' while critical hit
damage is 'xxxx' ('x' refers to damage inflicted on player, more x = more damage )

(2) After that, i try my Sharp Shooting using bow #1 [IS, 2 x Hydra, 1 x TG] and compared the non-critical damage with
bow #2 [2 x Hydra, 2 x TG] . The latter seems to inflict much better damage.

(3) When i saw my guild mates using his sinx, his critical hit damage is always bigger than his normal hit damage
thus supporting my theory

(4) Incantation Samurai card script
{ bonus bIgnoreDefRace,RC_NonBoss]; bonus bHPrecovRate,-100; bonus2 bHPLossRate,666,10000; },{},{ heal -999,0; }
*since no pierce def whatsoever when using Incantation Samurai versus player, i assume that "player"
is not included in Non Boss category*

(5) Thanatos card script
{ bonus bDefRatioAtkRace,RC_Boss; bonus bDefRatioAtkRace,RC_NonBoss; bonus bSPDrainValue,-1; bonus bDef,-30; bonus bFlee,-30; },{},{}
*since thanatos card got effect on other player, i assume that "player" falls in Boss category*

No. 4 and No. 5 reason was shocking even for me since i just discover it while writing this thread. If that is true, then
Vesper card is better than High Wizard card. Too bad though for player who buy High Wizard card.


Summary

In other words, don't use Incantation Samurai on your weapon. If you depend on your critical damage then use Valkyrie Randgris, Hydra, Turtle General and The Paper combo. If you're using skill, use Thanatos, Valkyrie Randgris, Hydra and Turtle General combo. If somehow this thread is false then by all means give me your reason and proof. If not then no Incantation Samurai on your weapon.