The Copy Wheel Eye cannot be fooled and Sasuke was able to see his opponent's movements.
He counters to swing his sword with lightning current and hits the bone sword. Of some weird reason, apparently, the bone sword is not broken.
Sasuke uses also his Sharingan to cast a genjutsu at his opponent. Attempting to make him think that 5 dull kunais was stabbed into Kaleb. Which would cause a great pain.