The most important thing about Andros's Shadow Clone was not its Attack power. It was not his Defence that allowed him to tank against the boss. It was his {Purify} that could nullify the annoying effect of {Mind Control} of Pauillac that mattered the most!
However, the system deemed that the monster horde would be more annoying than the{Mind Control} by the boss. Hence, the system provided players with a huge advantage at the start of the boss battle. Andros's Shadow Clone was meant to be there to wipe out the entire horde of Elite Tier monsters. Truth to be told, normal players would definitely find it more difficult to deal with so many Elite Tier monsters at the same time. If these monsters got the chance to swarm up on normal players, they would be as good as dead. They might even get wiped out in an instant --- not every player had an Inheritance Transformation Skill, after all.