In your opinion, which casino games do you think will give you the best odds of winning? I have always favored the Roulette table's dozens, columns and colored bets to cover a lot of numbers with a few wagers. Blackjack is OK also. I think that Slots gives you the worst odds which probably explains why a large chunk of a casino's profits is from the slot machines.
"In your opinion"? I do not think anyone's opinion would be relevant. You can just google and get the mathematical outcome of each casino game

Opinions are irrelevant, in my opinion

Probably she/he might be talking about the experience of different games but I agree with you with the mathematical outcome with different types of casino games. Having experiences very good towards the outcome or probably a strategy that you are going to imply when currently doing it.