swissair 111 would have "most likely" made it except for the capts insistence on dumping fuel.
Why do you think that? Your assertion is not supported by the Canadian TSB report, which at page 247 of over 300 states:
Based on these factors, it is evident that even if the pilots had attempted a minimum-time emergency diversion starting at 0114:18, it would have been impossible for the pilots to continue maintaining control of the aircraft for the amount of time necessary to reach the airport and complete a safe landing.