You misunderstand me. The person who brought that 100% presented it as a fact. But it was not a fact. For once, there is no data-based statistic on this, moreover there are certainly some reports to the contrary.
When you think that or when you are under the impression that something is true, based on anecdotal reports (or the lack thereof) as well as an unreliable memory regarding those anecdotal reports (or the lack of it), it might feel like a fact to you. Being under the impression, thinking that it is true, or it feeling like a fact, are all different words to express the same thing. If you think something is a fact, if you believe your memory, you don't think you are lying when you present it as a fact. It 'feels' like a fact to you.