The high-res versions may be played in low-res/text mode, thereby gaining this increase in level size.
So then we had a set of high-res stills for the environment and the characters.
There are 10 rooms per level in the low-res version, and 5 in the high-res version.
A larger game typically translates into mo-cap and art assets, high-res textures, music, voice audio, more environments, more content, and as a result a more fulfilling game to play.
