margin of safety
FYI from B777 Training Manual
The crosswind guidelines shown below were derived through flight test data, engineering analysis and flight simulator evaluations. These crosswind guidelines are based on steady wind (no gust) conditions and include all engines operating and engine inoperative. Gust effects were evaluated and tend to increase pilot workload without significantly affecting the recommended guidelines.
There are numerous other points to consider but anytime the aircraft is flown near any limitation, it's best to assess what margin of safety is left for your own "personal technique".