The iPod touch (current gen) has 256MB of RAM to the iPhone4(S)'s 512MB. The iPod Touch (current gen) has a retina display which the iPhone 3GS doesn't have. These factors may have produced a difference in performance.
The iPod touch (current gen) has 256MB of RAM to the iPhone4(S)'s 512MB. The iPod Touch (current gen) has a retina display which the iPhone 3GS doesn't have. These factors may have produced a difference in performance.