I'm a member over at TW2 forums, For most people they're finishing the main quest and side quests around the 25 hour mark. Of course this is down to peoples playing preferences (you may be able to bump it up to 40 hours if you stand around looking at the eye candy for hours) but after the Dev's stated it was a complete open world (it's not) with around 100 hours of gameplay I'd stay away till they add DLC or you can pick it up cheaply. They included in the SP map an island which is just for MP...go figure.
It's also smaller than the first Two worlds. I personally think the dev's went for eye candy rather than content which is a crying shame.
