This is not true. You can win also when you bet on Tail, your assumptions are wrong and based on a small sample size, worthless for any statistical model.
Could you please tell us how to win on tails? At least give me the range numbers to win on tails? You cant say that small sample size is worthless for any statistical model. Although it is only small sample, but it is a fact that there is something wrong with your site. If you dont care about this small thing, means that you will not care about big issue as well.