Is it really a matter of LUCK?

We all know the roulette game, and most of us think that its just a matter of luck, when you play it. Because you just bet for the number you predict that would come out. But did you ever think that there's a scientific study about this game?

When I am in high school, I had a subject Physics and it studies about matter. In line with that, I was thinking about the game roulette. Because I know that science can explain the possible outcome in roulette. And I am confused if this game is really a matter of luck?

 While I was surfing the net, I came across an article entitled Roulette Better spills physics behind victory it talks about that in a roulette game they can measure the bounce of the ball and what would come out as a result.

The Author states that "Using a subtle counting device similar to Farmer's, the pair was able to predict in which half of the wheel the ball would fall in 13 out of 22 trials. In three trials, the model predicted the exact pocket. That is equivalent to taking the odds from 2.7 per cent in the house's favour (on European roulette wheels) to 18 per cent in the player's favour. That is a very small number of trials, so they then confirmed their technique via 700 trials using an automated camera system, which would be too conspicuous to use in a casino (arxiv.org/abs/1204.6412)."

 With that percentage given, we can say that its not a matter of luck, because there's  an alternative way to know what possible outcome would come out. But as a Gambler they just use their luck in every bet they made, because it takes time to know the technique behind that game.

The author also says that "Farmer says Small and Tse's model is very similar to his own, except that they assume that the main force slowing the ball down is friction with the rim, whereas he found that it is air resistance." When I read this part of his article, I was thinking about the cheats in casino because of air resistance they can control the possible outcome in a game.

For me, this theory is not applicable to all of the gamblers. Because there's a possibility that other casino will cheat on the players. So even if you know how to compute for the possible outcome that would come out there's a big probability that you predict the wrong one, so it's better for you to depend on your luck with this kind of game.