The GOTY edition includes DLC (skins, maps, behind-the-scenes) on the same Blu-ray disc. The mandatory install is still ~2.2 GB . DLC content unlocks are small (KB-range) license keys.
Note that official multiplayer servers for the PS3 version were shut down by Naughty Dog Are you looking to clear space on a specific , or are you considering an internal hard drive upgrade to fit more games? Uncharted 2 makes PS3 shine; couldn't happen on 360 uncharted 2 ps3 size