So, if a dwarf has 300 earth on weapon, and he enchants his skill on earth attack wich will add 50 more points to earth attack making it 350, when clearly on that l2j.ru table it says that over 300 it does not make any difference (ex: 350,380,over9000 will get you the same ~70% dmg bonus), you claim that you will do extra damage....
PS: and no, i'm not trolling... it is easier to test the other way around since both attack and defense have the same bonuses... take a char with 300+ defense on some attribute [hit it] after add some buff resists [and hit it again]... you will have the same damage from an user that uses 300 attribute attack. (keep in mind that damage is random so you will need a decent number of hits)