I believe that sanctions, tariffs and similar things were more feared in the past years. I remember how people were talking that the USA can dive any country with economic sanctions because it's the most powerful country in the world but recent times showed us that sanctions don't do much, it's very easy to bypass them.
Bro, let's take it one after the other.
The US is a very powerful country, but when it comes to tariffs, the effect is almost mutual.
It depends on the country. If the US threatens a small country, then the effect is not mutual but if the US threatens a country like China, then the effect is mutual.
I don't think you carefully weigh the economics of tariffs, it is not as you viewed it. Like I said in my previous post, tariffs and sanctions are not the same thing, even as Trump viewed the current tariff war as a weapon being wielded by the US. Contrary to your claim, no matter how small the country is, its relationships and dependence on the US are the crucial factors here. If it is little or nothing, then the US tariff is futile.
In other words, don't look at it from the size of the country and their economy, but from its trade relations with the US. And it mustn't be the US, there are alternatives.