Nobody knows how different life would be if a different person was in power.
Would marijuana be legal if Harper was re-elected to another term? Probably not.
Would there be an HST if Mulroney wasn't in power? Probably not.
Would there be a 9/11 if Bush wasn't president? Probably not.
Would NASA walk on the moon in 1969 if Kennedy wasn't president? Probably not.
Would the Berlin wall be torn down 30 years ago, if Gorbachev wasn't around? Probably not.
You're the one who's really funny. You don't have a crystal ball.