Some Brawl hacks such as Project M and Brawl+ use a code to freeze Pokemon Stadium 2 so it doesn't transform. As a result of that, the projector screen in the back of the stage doesn't display character information or zoom in on characters. This edited stage stays in its normal form for a full match, so you can play without freezing the level and still have a functioning back screen.
Edit: Fixed again because I didn't know that there was a floating point value for "infinity". The link contains both the vBrawl version and the Brawl+ version.