This is a legit concern and that's why we don't usually other usual PvP games because of the possibility that the games might be cheated with anyone who has developed some cheats against their opponents. But as for enjoyment, all of them are enjoyable to gamble with but we just have different tastes when it's come to games that we want to play.
And that will always be a problem when it comes to a game of skill, in traditional casino games we know the most important factor is your luck, and as long as the random number generator in which the games are based is a good one then the chances to exploit the game diminish by a substantial level, but when it comes to PvP games in which skill is what matters then it is not difficult for players to find a way to cheat as whether you win or lose depends on your level of execution, and even software could be made which could do this for you.
Yeah, those games that are RNG are hardly to be cheated on and if there's a chance then that's just a slight one or in a very rare occasion. But those games that are based on skills, we like to get on it because they're based on how good they are. Although for some instances, if it's a PVP type of betting and it's a game where people can abuse and find a way to earn, they'll for sure going to make a way to abuse the game and cheat on it because the system might be foreseen into that situation. Those are like the bugs that's being uncaught and they take advantage of it.
For example on esports cheating is very common as is not rare to see top level players cheating by using aim bots or wall hacks which allow them to see their rivals behind walls giving them an unfair advantage, and they even do this when there is money at stake cheating legitimate players of their wins, so I can only imagine that if more PVP games become popular at casinos we will see something similar happening, with cheaters doing everything they can to obtain an unfair advantage.