The author does mention games support in Mac OS (or lack thereof) but does take care to properly attribute this to a hardware problem, as opposed to a software one. There is also note of the working group set up by Apple, NVIDIA and ATI to improve games performance on the platform.
So is Tiger any good? Yes, itís worth the upgrade from Panther. It does everything that Windows XP does, and in many cases it does it better, or simpler, or faster.