i still don't undersstand. what in it will feel different then in oblivion? is it how you move? how you attack? how you interact with things? tell me how
It's more to do with behind the scenes really, things like more npcs, better AI, better textures, better scripting etc
It's rebuilt so it can handle the improvements better otherwise the game would be a slideshow on old hardware, it's the reason Skyrim looks better than OB.