What's the difference between accessing user data with the Facebook Graph API (http://graph.facebook.com/btaylor) and using the Graph API to make a FQL query of the same user (https://api.facebook.com/method/fql.query?query=QUERY).

Also, does anyone know which of them the Facebook Developer Toolkit (for ASP.NET) uses?

The reason I ask is because I'm trying to access the logged in user's birthday after they begin a Facebook Connect session on my site, but when I use the toolkit it doesn't return it. However, if I make a manual call to the Graph API for that user object, it does return it. It's possible I might have something wrong with my call from the toolkit. I think I may need to include the session key, but I'm not sure how to get it. Here's the code I'm using:

_connectSession = new ConnectSession(APPLICATION_KEY, SECRET_KEY);
        try
        {
            if (!_connectSession.IsConnected())
            {
                // Not authenticated, proceed as usual.
                statusResponse = "Please sign-in with Facebook.";
            }
            else
            {
                // Authenticated, create API instance
                _facebookAPI = new Api(_connectSession);

                // Load user
                user user = _facebookAPI.Users.GetInfo();

                statusResponse = user.ToString();

                ViewData["fb_user"] = user;

            }
        }
        catch (Exception ex)
        {
            //An error happened, so disconnect session
            _connectSession.Logout();
            statusResponse = "Please sign-in with Facebook.";
        }