Thats is the "Gold Question", but i will tell what i know about :
[Resistence]
this atribute works very FINE, but, u dont get is so high, i will put an exemple, do you know the 'frost' skill of Pikeman ? so, u see, in bc its don't work? well, works, and very fine!!! but, when u get high level u get so much "ice resistence" and the Frost, of that skill doesn't works anymore =D, the such thing happen with the Stun, of Fighter and Atalanta, with a Fire Resistence, There's too the poison of Pikeman... and more.
-Resume- this Atribute, Resistence, works for DEBUFF!
[Absorb]
its more easy to understend it with a exemple > Someone, or monster, who have 100 -100 of Attack, attack you, so u will recive 100 of damage , but u don, u recive 30~50 ... there's enter the ABS atribute, so, u have 90 of ABS, and u recive , of an 100 attack ( u can see it in Chat ) only 30, 'But my abs is 90 why i recive 30 and not 10 ', you ask me, and i tell you... your abs is a RANDOM value who will get the max of 90! so u can random 10..20...70...89 , well, the values are close to the max, in all cases, and this value is subtracted of attack, so, you recive less damage.
- Resume - is works for u get less damage.
[Speed]
this is your Walk Speed.
[Defense]
have there something who few ppl know about. the defence only works if to monster don't miss, yeah there it too, so you will recive and damage, couse someone do not miss , and maybe you will see 'Defence','Evade','Block'. all this things will make you dont recive any damage.
-resume- works for you dont get an damage.
[Attack Rating]
this attribute works for u don't miss and attack.
[block]
works for u block an attack.
[evade]
works for Evade an attack.
[Attack power]
works on you Normal Hit Damage, for exemple, you see 110-120 , you hit something like 110, maybe 115, and by max, a critical, 120.
i think that's all
=)