You're assuming that whether the reported totals matched the votes is the only relevant point. It is not the responsibility of critics to show that an election

You're assuming that whether the reported totals matched the votes is the only relevant point. It is not the responsibility of critics to show that an election was fraudulent. It is the responsibility of a government to convince the populace that the election was legitimate. If a large portion of Iran thinks that the election was fraudulent, that's a good enough reason to support their efforts to replace that government. Al Gore should have gotten his Nobel for preserving the republic by letting the 2000 election die in an orderly fashion rather than for his climate scaremongering.