How do more people like Tetra Master than Triple Triad? Triple Triad was easy to understand and I got to the point where I could pretty much beat anyone.

Tetra Master's rules were inconsistant and complicated. The cards were not realistic and the way it was played was just...well, it wasn't even a good try. They had a big hit with Triple Triad and tried to up the ante. They failed miserably. There wasn't anything good about Tetra Master.

And at least Triple Triad was completely optional.