I didn't find it too similar to my experience, although some elements were there in a much more muted fashion. There is pressure, much of it is self-induced, and there is competition, but not so much in a man to man (or woman) way. What I mean by that is that you do care where your class rank is, but it's more like you against the "class rank" list than it is against anyone in particular. Still, there are plenty of assholes in law school, and you don't have to look particularly hard to find them.
There was a great quote in a book I read before law school (don't remember which one, sorry) about being the idiot who always raises his hand in class to talk. It was from some graffiti found in the mens room in one of the classroom buildings, and it went like this, "If you don't know who the class a-hole is by week 4; it's you!"