jr2, Goatmaster, and TrashMan are strict believers for one reason or another, most likely because that's all they've heard growing up and are not going to listen to any of you in the "uninformed" opposition. It's no use trying to use reason to prove anything to them, they've got on that self-righteous high their religion provides, and they're loving it.
Or they may be really good trolls, and if they are, I commend their efforts. 
Excuse me, sir. You make gross assumptions here. For your information, I was an extreme atheist for the first fourteen years of my life. Self-righteous? I never once claimed to be perfect. To the contrary, I am a wretch of a man. I'm better than I was, but I'm not perfect, nor do I think myself better than you for any reason.
Anyway, back on topic.
Yes, Kara, I believe there would be a distinct difference between them, mainly in the motivation for the behavior, which, I find Christianity's reason for moving people to do good to be leaps and bounds higher than any other belief system or structure or whatever.
Mefustae, that's not what I'm saying at all. If you were a PERFECT person, you could go to Heaven without accepting Christ's sacrifice at all. But I assure you, there is no perfect person on Earth- not you, not me- besides Jesus Christ. If that's what you mean by "Good Person," and you think yourself capable of it, then by all means, try. But I would warn you that you've grossly overestimated your own capabilities. As I said before, though, you do need to accept a gift given to you in order to receive it. The gift is being offered freely, someone else payed the price for it.