Theoretically the vampire Mage and the spellbreaker knight were fairly even in power.
However, the racial advantage was evident when the two started fighting with all their strength.
On one hand, you had a terrifying vampire whose race could be found in all high-magic planes, while on the other you had a normal human who had only strengthened his physical strength and comprehended some special uses of Elementium crystals. The spellbreaker knight might be able to force a stalemate against Bleia by using his skilled and potent knight battle-techniques.
However, once the battle had turned into a critical fight on the edge of life and death, the terrifying traits of Bleia's race became the deciding factor. Her resilient Physique and regenerative ability far outclassed her opponent and gave her the edge. After three rounds of battle, Bleia had the advantage on the battlefield and was slowly turning the advantage into a complete beatdown.