After all, they are just clones, they aren't as perverted as the main body who could take down Saint even though he was just in Xiantian Emperor Realm, also the clones were exploring different paths, their strength would varies, some would become powerful than the other.
The demon clone is considered the strongest clone right now, it's strength surpasses that of the other clone, even the main clone, the necromancer clone is much weaker than it individually, the process or the method of how he gained strength isn't something that Shadowslash is proud off.
It didn't gave any mercy to anyone or anything, it now carries a deep aura of grudge, as of this moment, it was now waiting for an opportunity to return to the death cave to unload all of the resentment it carries, it doesn't harm it but it's personality continue to become more cold bloodied.