The only information you have on Jesus, his birth, his life, his death, his deeds are from the bible. While sweeping statements comparing these myths to sun god myths are bound to be inaccurate, there are certain themes that run through all. So to say it has nothing to do with the bible, is odd at best, because you wouldn't know about Jesus but for the bible, and you wouldn't know the stories, which we sometimes compare to older stories.
Now you may be claiming to have some personal knowledge, that you have acquired through other means, but you would never have even tried to accumulate such knowledge but for the bible. Which by your many comments, you don't believe is accurate, except what it says about Jesus or something like that. So the source that you don't trust for so many other things, you trust for information on Jesus because of this other knowledge you have accumulated.
This is why I say it's silly to even start the conversation. As I said earlier, it's kind of like water. It molds as needed.
NC