Mormons and Christians do not believe in the same Jesus. It's not bad or good, just something that is.
Mormons believe that Jesus is a spiritual brother of everyone ever on Earth, that he was a great Mormon, and is now the God over another planet, making spiritual babies with his spiritual wife. That's the way Mormonism works, that's what Mitt Romney hopes for as a Mormon, that he will die and him and Ann will be gods over another planet.
Christians believe that Jesus is God, and are to continue his work of serving the poor, the outcast, and the disenfranchised, revealing Jesus' love to the world.
Again, Mormons do not believe Jesus was always God, but do believe that he is now god over another planet.