I've watched a guy take a $1200.00 account and turn it into $100,000.00 in 2 months of trading. No I didn't watch every trade, but watched a lot of them.
Here's the thing, the guy has a very high paying job. If he loses his $1,200.00 he can replace it. So the mental edge is there, plus he has no issues being aggressive and no fear if he does lose. It's true he did not go all in, he traded futures and he used stop losses. However, imagine someone else who only has $1,200.00 and try to follow him. It's very difficult to reproduce and follow him even if you can see his trades. Rarely he will adjust his stop loss and/or profit target and if you're slow to do this as well, you can have a losing trade when he has winning one.
The point is there are plenty of people who can produce stellar results, but people don't factor in the mental aspect of it, which is a huge part of it. For all we know this guy could be a multi-millionaire already. So he could care less if the account he is trading goes bust.