I'm not sure you can really compare the two in scale of intimidation. Most of what's recorded seems pretty one-sided; Patriots were unwavering in the way they'd ostracise Loyalists, confiscate their property and bully them into either keeping quiet or supporting the cause. The Loyalist population was estimated at no more than 20% often focused around administrative positions, and not well-placed to do much intimidation in reply. The Patriots had numbers and focus on their side, necessary for the sort of grass-roots action involved. 80,000 Loyalists fled at the end of the Revolutionary War, I don't think you'd do that unless you took the threats seriously.
What was unique was the propaganda started right away, not just a revisionist recollection of events afterwards. Pro-Patriot broadsides and newspapers would appear days after major actions, reporting hugely biased versions of the truth which were believed not just in America, but by people in Britain too.
Having done some surfing the current thought on percentages (which are a huge guesstimation) was that 20% of the population were loyalist, 40% patriots, and 40% undecided. But that varied a lot by location. Some areas (New York City and the deep south had a higher percentage of loyalists. I agree that the patriots clearly won the propaganda war. They certainly seem to have had the better writers.
"Give me liberty or give me death!" is a lot more inspiring message than
"Please pay the tariff on tea whether you want it or not"
or
"You owe a debt to the motherland even if you aren't from there. Support British taxes and tariffs on the colonies."
I had the impression that intimidation by British and Loyalist forces was at least equal to that of the rebels. It would seem like it would have to be given the numbers were against them. And British were forcibly quartering troops in civilian homes. Having some British Regulars or Hessian Mercenaries sleeping in your house, eating your food, and interacting with your family had to be pretty darn intimidating. And as a counter to the 80,000 Loyalists who intitially left, there are the 11,000 prisoners of war who died (often of disease or malnutrition) on British prison ships. To put that in perspective 1,400 prisoners survived and the 11,000 is more than twice the number killed in battle (about 4,500).
Do you have a citation for your contention that the intimidation was one-sided?