I fly the 747-200 as an FO.
Can't say that I've experienced every possible condition of flight but the Classic is so nice to fly it doesn't take any special technique in a crosswind takeoff.
Just enough aileron to keep the wings level--as Rainboe noted, the upwind wing will want to lift up.
I think, a lot of pilots with weak "stick and rudder" skills are very reluctant to cross the controls--I find rudder skills in particular the weakest.
So in the original case mentioned above, I can imagine an FO being timid on the rudders, trying to overcompensate with aileron (35 degrees!) and then the shifty wind (8 kt average tailwind component) all making things very edgy on a heavy airplane.
Back to Basics!
Big, powerful, high tech airplanes still need to be flown using fundamental skills.