From my understanding of this, I\'m not convinced that a game running in 480p will look phenomenally better than the same game running in 480i. It might look a little better, but it would all depend on how the developers implemented it.
Theoretically this could allow the game to display exactly twice as many unique, complete frames per second. However, why would the developers enable this? To draw the extra frames, they need to have processor power available to do it. If they had spare CPU cycles to throw away, they could have used them to make the game look more polished in the normal 480i mode, which is how most PS2 owners will see it. There\'s not much reason to hold a lot of the CPU\'s capacity in reserve just so a small percentage of their customers could activate this 480p mode on their expensive televisions.
I suspect that this game running in 480p mode will simply run at the normal speed, and repeat each frame once. That might be a little clearer than the 480i mode, since the television CRT is drawing every frame in one pass instead of two. I wouldn\'t expect the end result to be really obvious though.