哪句表述更准确更地道1.only if the arguer had affirmed that under any s

哪句表述更准确更地道
1.only if the arguer had affirmed that under any scenario adopting his proposal will be unquestionably to reach the given conclusion,can the assumption be grouded.
2.only if the arguer proved that under any scenario adopting his proposal that the given conclusion would be achieved,can the assumption be grounded.
其实两句是一样的意思,大家觉得哪句更地道?