OK, then answer this, why does Boeing publish takeoff weights above Maximum Structural?
What's Max Structual for you may not be Max for the next person. Thinking back to the Seven Two there were all sorts of numbers for Max depending on who was the original operator. And the speed adjustments to V1 for a contaminated runway were applied to numbers that the runway would allow that day, not what your actual weight called for. So you would need numbers that were "off the chart" on a normal day.