Comparing winning the lottery to creating a social phenomenon on the scale of Facebook is pretty ridiculous. I'm not sure why people are so against giving this guy his due credit, but I find it very discomforting as an aspiring entrepreneur. I can see how some people could not enjoy Zuckerberg's personality, but that should be separated from what he has created.
"Luck is what happens when preparation meets opportunity."
As someone said on another story about Zuckerberg, if a person can go from $0 to having a net worth of over $6.9 billion then they are most definitely a genius.