OP needs to learn how basic probability works.
2/10 chance =/= guaranteed 2 successes in 10 trials.
That is all.
While there are people in this thread that have basic confusions on the subject of probability, the OP (Darth_Sweets) is certainly not one of them.
He used a type of statistical analysis called a confidence interval, and performed sophisticated math analyzing his raw data. The only disagreement I had with his analysis was the sample size, not his methods or understanding of probability.
Either you didn't actually read the OP, or you didn't understand what he was saying.