I guess my point then is that your data set is probably biased heavily in favour of traders that don't have informational edges.
I still don't understand what the point you're trying to make is. Are you talking about trading in the marketplace or cheating? You seem to seriously confuse the two.
So I hope I've given pretty strong arguments that patterns exist, and that some people can use them to make money, even if you can't necessarily prove it using statistical means
"I guess" and "I believe" is considered to be quite poor data.
Fact: No trader ever has outperformed chance.
You can reliably find 'alpha' by having an informational edge.
I strongly suggest you read the Tao of Alpha link posted above.