If those video poker players have skills, they can try to maximize their chances of winning, but still, both games need luck so they can not have a big expectation to win in a video poker game as they can meet the other player have high skills in poker. If a gambler does not have skills and only depends on his luck, then slots could be the best choice to gamble. I guess each game will have its fan and we do not know how many of those like both games.
Yup, video poker still relies on luck, it's kind of similar to blackjack where no matter how well you know the game you'll eventually get crushed by the house edge. In terms of the house edge, video poker is one of the lowest (it ranges between 0.5% to 1%) it so it'll come in handy if you're a gambler who prefers to play low edge games.
If I understand correctly, is this parameter configurable and the owner of the slot machine can significantly increase it? I remember how in my country (in wild times) crazy "businessmen" set up a slot machine in such a way that they had a 25-50 percent advantage
And I had a friend who was doing this in the technical part, so we cannot know exactly what advantage the slot machine has.