well the the way I see it and taking an atheistic stance (I do like using this handle ) Jesus is not depicted as an otherworldly individual in the gospel accounts. He is depicted as an individual who worked hard to alleviate spritiual and physical suffering. He put himself in the thick of human life and urged his followers to do so too. He is portrayed as enjoying nature (check parts of the sermon on the mount), good food, good wine (the miracle of turning water into fine wine) and fine clothing (the one piece garment that romans cast lots over). He took delight in people and expressed intense emotion when the need arose as when his friend Lazarus died and when he drove the money changers out of the temple.
I think it would be more accurate to say that some of Paul's theology falls apart without a literal interpretation of Genesis but this does not apply to all of chrisitianity and certainly not to Jesus' teachings.