As I've explained to countless dimwits before you, Ryan, exactly how well he's done in his career has had fuck all to do with her role in the marriage. That he's had a career at all is of course partly down to her, and she should be compensated accordingly. Hence, a flat sum, not a percentage.
The matter of whether she'd have done spectacularly well in her career should be, I'd have thought, for her to make a case for. But I'm talking in general terms, here.
The maintenance of the children is obviously a legitimate part of the calculation. That being so obviously uncontentious that nobody has bothered to even raise it until now. Ryan.