First of all Chair, thank you for sticking to your planned argument instead of changing it just to be contrary. I am vindicated of the charge of "straw man" argument. Silent Hunter, please refrain from dumb criticisms when you really don't know what's going on. Why... if you did that you might live up to your name!
Second of all Chair, you seem to have skipped stating the rest of what you meant to say and just jumped to your punchline... You can't expect me to state your entire argument for you, so do you want to take the step or should I do this for you also?
Sir Hunter, I'll explain this for you. Chair is doing exactly what I predicted and is using a flawed translation of the Hebrew text. If you look at the King James translation above you will see that there is no difference between the two passages, and no disagreement between who killed Goliath and who killed the brother of Goliath. I realize you are out of your league here, but I'm sure it's nothing new.
The (unnamed) translation that Chair is using (even though he said he is using King James) probably reads "Goliath" rather than "brother of Goliath" in the passage in Samuel. Honestly, it would take a pretty ignorant Hebrew to not know the difference between The Goliath (the original named Goliath) and the next giant in that family, and the Hebrew authors often clip words to try to save space. The reader was expected to be intelligent enough to know what they were reading. Sort of as if I said "John and Jane Doe" and I expected you to realize that John's last name was "Doe" from context. The argument that Chair is using assumes a level of gross stupidity that was unknown to the ancient peoples. A good translator knows his context, subject matter, and culture of his source text.
If you are still lost by this time perhaps you should dig up one of the Atheist or Muslim apologetic websites and do some cut and paste.