It seems that Windows Phone may have a trick up its sleeve which could lead to some excellent games in the future. The scaling solution will allows developers to create games in almost any resolution with little or no effect on performance.
From Shawn Hargreaves Blog- “Windows Phone includes a hardware image scaler. This allows XNA games to choose what backbuffer resolution they want to draw to, regardless of the physical screen size. You draw at whatever size you like, then the scaler adjusts the resulting image to fit the screen. This is similar to how the video output works on Xbox 360…”
