Re: mross,
Yes, all modern heavies have differential braking to assist in steering the aircraft. On my current type, we are actually able to dispatch with the nose wheel steering inop. Though, if I actually would, and with passengers, is another matter.
That said; in a cross wind large aircraft at low speed have a tendency to weathercock and it can be difficult to control with any finess the direction of travel. Add into this, no nose wheel and a cambered runway.... You get the picture.