That spreadsheet doesn't show anything or proves anything anyone can make a claim and create computations I thought it was some complete list of the 2000 bets however if your claim was true then that's really nice to know that you've managed to have a $1 million from your $5000. Only few people managed to accomplish something like that.
He might hide some informations and considered as confidential because its his own strategy and don’t want to get exposed. Considering the time and the discipline of OP, he might telling the truth on this successful story. There’s a very few gamblers who monitor their activities online, I can say they are discipline gambler and that why they succeeded. This might be too good to be true but let’s give OP the benefit of the doubt, we have nothing lose anyway.