I have been playing about on roulette with cheap players.
I am convinced that they are beatable but that you should NOT use good cards. In essence, any time you come across another card the same and have to flip you lose a lot of value.
For instance, Fred is favourite against most cards and holds a 70% edge. As soon as you play against another Fred, your odds drop to 50%. Your edge for using an expensive card is then gone and it is like having aces in poker, you are going to win a small pot or lose a big one.
In other news, my only game today on 8 man roulette went like this...