Power of console is not always correlated with size of the in game world map. For example:
TES V: Skyrim : 37.1 square kilometers,
TES IV: Oblivion - 56.97 square kilometers, 1,000 NPC's
TES III: Morrowind - 24 square kilometers, 1,000 NPC's
TES II: Daggerfall - 161,600 square kilometers, 750,000+ NPC's, 15,000 towns, cities, villages, and dungeons for the player's character to explore