He got downvoted because he said something that didn't match up with what OP said. In the presentation, Apple said > The probability of a false match is differ

He got downvoted because he said something that didn't match up with what OP said. In the presentation, Apple said > The probability of a false match is different for twins and siblings that look like you So that means the 1 in a 1,000,000 chance doesn't make sense here because Apple said the probability is different in regards to twins and siblings that look like you. So @gre just spouted off the statistic when OP was asking what the probability might be in regards to twins and siblings, because Apple says that it is different.