If Lawrence Chan is the Lawrence Chan I am thinking of, he oversees one of the best charting platforms in the industry, NeoTicker. His comments on technical analysis in ES Journal are impeccable. However, I don't know anything regarding his trading record.
You have no way of knowing who's telling the truth here. And even if you did, just because someone is a good trader, there's no guarantee that you could make a penny with their system because success involves more than the set up (money management, risk tolerance, stress tolerance, etc.). You'd be better served by taking ideas you pick up here and seeing if you can make them work within the constraints of your trading abilities. There's no instant gratification with trading.