Earlier quoted context omitted.
Jesus being a "good guy" is fundamental to the role he plays in Christianity. How could you see it any other way?
From some Christians' points of view the important part of the Jesus story is that he is sacrificed by God as a way of dealing with a fundamental break between humanity and God having to do with the Jewish priesthood.
Yet he was betrayed by one of his disciples, and died a distinctly "low death". I think it's more correct to say that God sent Jesus down to Earth and Jesus sacrificed himself / God forsake him, than "he is sacrificed by God". This is probably a bit nitpicky from your perspective.
My main point is that there is no Christians that do not hold the following two aspects of Jesus as extremely important:
(1) The life of Jesus: how he lived and what he taught
(2) Jesus sacrificed on the cross
Frankly, I think you're not familiar with Christian teachings if you claim otherwise, i.e. by disagreeing with a person who says that Jesus being a "good guy" is an important aspect of the Christian faith. It is important, unequivocally.