I checked the facebook page and see some pictures from you, that still make sense because,
Your Bulkan only used 600 armor and 600 weapon, and you trying to fight with Kailipton with 700 armor and 700 weapon? and the level highest than you? Of course you make no damage, and also because your level low than him. For your information, the different level make a different damage even you wear same equipment. This mean higher level will give more damage to level under him.
And another information, each character have his own special damage and defense, if you cannot win with Bulkan, try to use Perom, you will see the different with the deals damage.
I`ve got complain also with player that he used armor 450, he mean with armor 450 he want immortal? No! you will not! The defense is look what you wear, not what you want.