That is because Jesus IS GOD, of course no human being has that worthiness. However, as SD has pointed out, Christ's divinity is completely different from Mary's sinlessness. God protected Mary from the stain of sin, it was done through no effort of her own. Christ was sinless because he is God, sin is by definition a transgression against God; therefore it was never possible for Christ to sin, he didn't require any protection.
Then why is she the one that is praised and honored when it is really God that the glory should go to?
us: There is no hint of this in the bible.
you: We know it to be true because we are the church that Christ founded.
us: It's not in the bible.
you: The bible isn't the only source of revelation "boo sola scriptura"
us: You don't even read the bible how would you know what it says.
you: We gave you the bible but you edited it, who are you to point to the bible to us.
us: Believe in Jesus and you shall be saved.
you: Who are you to assume you are saved, you can never know if you are saved that's the sin of presumption.