I am about as sharp as an orange but if you give me two sets of numbers that are far enough apart,I will make money gauranteed. Not many one way guys can say that. They might win some here and there, but in terms of consistancy they cannot win them all and the losses generally ass up.
There is no way to truly know anyways. And who really cares? This is afterall a posting forum. Even when people meet at a baskh or a party, they might have their Mississippi Bankroll out. Or they may have borrowed money from someone to look like a big shot.
People are strange creatures.
In my experience the less people claim to win, the more likely they are to be winning. Who brags about something they do all the time? Why do you think guys post about some 5 or 6 team parlay when they hit one? becausethey probably have bet 4 or 5 hundred of the frigging things, and this is the first one they ever hit.
Kinda like bragging about banging your old lady. If you are doing it consistantly why the need to brag, everyone should know you do that anyways.