I know Andy Man and Mike Ser personally. Not as a close friends but as acquaintances. Had dinner with them a few times. They do know their trading and are fairly knowledgeable about macro/microstructure/cap mkts. I do however doubt Andy's claim on some level. His claim to fame was short silver aggressively in mid Sept 2011 after having caught a smaller move in May'11. I'll give him the benefit of the doubt he made good money, possibly due to a combo of luck, aggressiveness, and research. But I doubt he broke 7 figures in 2011. He could be north of 7 now but back then realistically from the research I've done, he probably went 4 to mid 6 digits which is still a damn good return. Andy's results are said to be from CMC Markets which was the broker he was apparently using. CMC offers CFDs hence the leverage. I have seen the paper results but it is what is it. You either take it at face value or not.
The other thing is they are running a business. I've spoken to Mike about this and we both understand that. Good guys but they are businessmen thru and thru. They know their product and market.