My information (which is worth exactly what you have paid for it
) is that the xwind limit is largely based on rudder authority at the POH final approach speed.
So, if a large runway is available, and you really have to get down, you can fly it 5-10kt faster and "force" the plane down onto the runway, and should get away with it. Not that I would ever try it myself!
Obviously with a 50m wide runway it's easier anyway because you have lots of sideways drift leeway...
There are two schools of thought on how to land; the traditional is to always do a "minimum energy" landing, i.e. you virtually stall at the end of the flare. The other is to fly a bit faster and you have at least the two main wheels down before the stall warner horn goes off. It seems obvious to me that the former technique, while reducing the damage if you hit something (because you are landing slower) will have a much lower xwind limit because you have no elevator authority left and not much rudder authority either.