abouzar-jaan, I'm sorry, but even though I believe that your brother is very smart, in this regard his statements are not so intelligent
Ask him how it was that Mousavi lost his own home town in Iranian Azerbaijan, or how Karoubi got 15 votes total in a town where he had a campaign staff of 25 people. Or ask about this other town in Iran where there were exactly 5000 votes for Poop, exactly 2000 for Mousavi, and none for the others or spoiled ballots. Ask him about the straight-line graph that shows that as the counting goes on throughout the country, there is a constant 65% support for Poop everywhere, including in Azerbaijan, Lorestan, and Khuzestan where the other 3 are from. Also ask him how almost every poll conducted before the election, including one that had a sample size of 14,000 people from around the country, showed Mousavi either slightly ahead or significantly ahead.
I think if your brother was in Iran he would've felt the reality on the ground and how many people voted, even if they never voted before, for Mousavi because they were sick of the lies and ugliness of Poop and his shaming of Iran.