the truth is most games aren't "good" games, they are just average games. Probably 75% of the tables you see in a day are average games, if not bad games which you should avoid. Especially online.
I've done very well with being picky at which games I play in online, and preferably playing in live games at the casino or at friends houses. Someone who plays 365 days a year may show the same or less profit than someone who uses superb game selection and plays 1/4 of that.