Pegg, if God the Father 'commissioned' Jesus to be a saviour, are there many other saviours? You mention that Moses saved his people. Moses saved his people from slavery in Egypt. What did Jesus save his people from? How was this achieved?
There are no other saviors besides Jesus, no.
The role that he is fulfilling is the role that will eventually lead mankind back to perfection and back into full harmony with God and his laws.
2,000 years ago, Jesus laid down his life to uphold Gods sovereignty and answer a universal issue raised by Gods enemy. Thereafter , the value of his perfect life was given to mankind, by God, to make atonement for their own sins.
Colossians 1:13, 14
He rescued us from the authority of the darkness and transferred us into the kingdom of his beloved Son, 14 by means of whom we have our release by ransom, the forgiveness of our sins
And for Jesus faithful service, God promoted him to the position above all others as the head of the kingdom of heaven....
Ephesians 1:20 
which he exercised toward Christ when he raised him up from the dead and seated him at his right hand in the heavenly places, 21 far above every government and authority and power and lordship and every name that is named, not only in this system of things but also in that to come.
from that position, Jesus has been enlightening mankind as to what is required of them to attain to salvation from death. That message has been preached into all the earth to all nations....
Matthew 28:19 
Go, therefore, and make disciples of people of all the nations, baptizing them in the name of the Father and of the Son and of the holy spirit, 20 teaching them to observe all the things I have commanded you. And look! I am with you all the days until the conclusion of the system of things.
and very soon, Jesus will take action against Gods enemies.
Revelation 19:11
I saw heaven opened, and look! a white horse. And the one seated on it is called Faithful and True, and he judges and carries on war in righteousness.
And the best part, is that after Christ has conquered, mankind will be set free from the suffering of this world because the one who is causing all the strife will be gone, and God will restore mankind to the way he originally purposed life to be:
Revelation 21:3 
With that I heard a loud voice from the throne say: Look! The tent of God is with mankind, and he will reside with them, and they will be his people. And God himself will be with them. 4 And he will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry nor pain be anymore. The former things have passed away.
5 And the One seated on the throne said: Look! I am making all things new. Also he says: Write, for these words are faithful and true
All this will be possible because of what Christ did 2,000 years ago, and because of what he will do in the very (very) near future.
