Quote: "Some time back some forum guys did tests on the relative performance of Tier 1 vs Tier 2. I recall that whilst graphics speed was comparable, code logic was around 20 times faster in Tier 2. It would be fantastic if this was an area that could be worked on with successive updates to the AppGameKit and AGKS products so we can all enjoy faster code... to enable us to deliver more!"
Just keep in mind that it only makes a noticeable difference if you are CPU bound, which many games are not. If rendering is your bottleneck, the game will still run at the same speed.
Thus the "deliver more!" part is somewhat relative.
That said, every improvement and optimization is welcome, no question.
In the end it boils down to how many users/games would see a true benefit from this as opposed to the same dev time being used for optimizing other things or adding new features.
Who knows, so many different games, users, experience levels, export targets, hardware specs, etc.