Robbie,
Your quote above is about a crosswind that is sufficient to require a certain control technique when in the final few feet of landing an aircraft such that there is no drift as the wheels touch the ground.
That's not really the same as a crosswind that is sufficient to move wake vortex at a few thousand feet up. Your crosswind landing technique isn't really relevant if you're upset by the wake of an A380 at a few thousand feet up!