It was a very good game but I was mad that you couldnt swin, vice city was 1/2 water and getting on and off a boat was a life or death situation. When I knew that you could fly helis I thought you could fly the big planes too, but you cant . But still, good game.
Lets compare Liberty City and Vice City, not counting the useless beach and water in VC. Liberty City has a subway and tunnel system, that makes Liberty City a bit bigger than Vice City. Vice City has interiors, which makes it almost the same size as liberty. So, in the end, they're the same size.