That's interesting, my interpretation of that line in scripture is a bit different. I always considered it to be mostly a matter-of-fact observation: in other words, as a matter of fact, it's easier for a camel to go through the eye of a needle, than for a rich man to enter into the kingdom of God. In other words, a lot of rich people have placed an undue priority on getting wealthy, at the expense of their spiritual development.
So I don't think it means being rich and getting into heaven is impossible. It's mostly a warning that making wealth the most important thing often (but not necessarily) comes at the expense of spiritual matters.
Well then you agree with me that it's not an endorsement against material achievement or wealth in an of itself, but rather a warning that a camel has a better chance of getting through the eye of a needle than someone who would TRADE his soul for riches. And you DO agree that virtue and wealth are not mutually exclusive. AND that the key point in that section of Scripture is that "With God all things are possible" rather than wealth being some sort of automatic barrier from heaven.
In either case, the writing is not about Christianity and its appeals, but about islam and its appeal to people of a certain mindset. The way I see it, people with a rather large chip on their shoulder and a compulsion to blame others for their misery and/or "get even" are good candidates for islam, as opposed to any other religion. For one thing, islam actually condones violence to non-muslims.
I also don't think that success, as in "winners v. losers" is all about financial success. It is about success in life, and that is something I would measure in terms of happiness and joy for living. Again, this is just my perception, but Christians to me seem like a generally joyful lot, whereas the only joy I've ever seen among muslims was the dancing and celebrating they did in the streets around the world upon hearing that the World Trade Center towers had fallen and thousands were dead.