poker is all mathematical probabilities and not certainties.

[DaNutFullHouse]

What in the name of God are you doing preflop? You open to 3.5xBB and leave yourself roughly 3xBB behind? Send it in preflop instead of running a comical version of the stop and go.

The dealer isn't "holding" 27 cards, this has nothing to do with anything. The only relevant cards are the ones visible to you, because everything else is unknown. When the money goes in on the flop, you have 14 outs out of 45 unseen cards, with TWO streets to come - that's where the flop % to win comes from (actually 53 in this case). Turn, you miss, but pickup counterfeit outs, now you've 20 outs of 44 unseen cards (45% to win). You were essentially a coinflip at every stage.

As far as your little trial, you would need to do it hundreds of times to produce a relevant statistical result, 13 or whatever number of trials you used is too small a sample size.