Macworld tests games at 1024x768. Not a resolution that is going to show off the capabilities of higher end video cards.
The difference will show up at higher resolutions like 1600x1200 or 1920x1200. Look at pcgaming benchmarks to get an idea of the difference between the 2 cards.
as someone pointed out, they are being run at 1024x768 which does not exactly tax a video card, let alone show the advantages of having more memory dedicated to textures/etc.
as someone pointed out, they are being run at 1024x768 which does not exactly tax a video card, let alone show the advantages of having more memory dedicated to textures/etc.