Well according to the people that have worked under both PMs, Harper has exceeded Chretien.
"Anybody that could still think for themselves realized what the objective was here -- control. It's hyper-extreme control, complete with threats and everything else," said another senior official, who has also worked at the PCO. "It wasn't like a benign dictatorship the way it was under Chrétien -- they were a pain in the ass, too, but nothing like this."
Depending on your level of worship, that means Harper is either the Devil or God.
I happen to think he hides his horns well.