Wrong. Jesus is God. There would have been no other to send. God does not fail. His Word never fails. Jesus is the Word of God. You ask amiss, and you ponder Jesus as a mere created being, and if it were so that He were, He could never have delivered a fallen creation by His shed blood, for all men have sinned and fallen short of the Glory of God.

We may fall short, but not Jesus. Your outlook on Him as replaceable as if He were a mere dirt man I find disgusting.
Jesus could not sin, but we all are of sin, born in it. He is the promised Messiah in Genesis and the product of Heaven where the decision was made before the foundation of the world, that He would ransom those that are His, given to Him by the Father, for not all are His. As He so chooses. He suffered a real death that those that are His might live to eternity. This is not a game and a "what if". This world is soon to be destroyed by the revealing of Jesus from Heaven, and those that think maybe there is another way or another perfect "created being' are not His, for He is God. inseperable, yet one. This truth is from Heaven and it doesn't come from human reasoning, it comes from God and his preserved Word, our life is in Him, our hope is in Him, all that is created, is for Him and about Him. Your role in this matter determines your eternal destiny. Just as your being born didn't involve your input, your calling will be of Him, not your ambition to logically come to the conclusion that there is another way or another hope, or that Jesus if failed, could include a plan B. There is no plan B. You are either in or your out, and even then, you didn't come to Him unless He first called you, fallen that we are.