Because without Christ I would be bound by sin again. There is nothing in me that sets me free from sin. There is no action on my part that keeps me unbound. It's only by God's Spirit and Grace that I am free from the rule of sin. It's nothing I've done.
So no. I'm not better than other people because I have the same base nature and would be bound by the same task master they are.
I AM in a better position because I have been set free by Christ. They have yet to be set free, but have the same opportunity if they choose to take it.
Saying I am better than someone else would mean that I am in some way superior to them. In order to be superior to someone or something, you have to have an intrinsic quality that gives you higher status than they are able to obtain. Christians have no such intrinsic quality. Our "status" is solely dependent upon Christ.
How can I say I am better than the non-believer when I am completely dependent on someone else to stay out of that cesspool?
Never mind.
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Hebrews 13:23 Know ye that our brother Timothy is set at liberty