Let's just say that a game of poker would have a predetermined winner due to luck, providing that everyone else just called every time, never folded, spoke to their competitors or bluffed. This would make poker a game purely out of luck. However, there are also many more factors that can be taken into consideration besides luck, such as skills in bluffing, etc. that Kenty said. You just need to know when to fold and how to bet right and safely. In general, I'd say a tournament would work as someone who is a master at poker is not going to lose to someone who's never played a game of poker in their life.