Prof. Eliot Jacobson has done a math research / analysis and proven that it is totally true for some people to be luckier than others in their life time. It was reported either in his book or on his apheat.net before.
Me on luck, for any who care to read it:
No. One guessed right. The other guessed wrong. Luck doesn't exist.
"Luck" isn't a scientific term so there's nothing to prove or disprove. It's just a word describing certain outcomes of chance.
The problem is, people try to tie it in with seemingly rare events that stand out but not on ones that don't. My video poker scenario above is a prime example.