@othus12: LOL bro.
@SpeedForceSpider: True. However with his Observational haki Zoro should be able to predict Sephiroth's movements to an extent and with that he should be able to react accordingly. His reaction time is already at a high enough level to where he shouldn't be completely speedblitzed. The only thing is the fact that the exact speed of the water arrows were not given. However we do know Zoro was already above bullet time reaction