The only important difference between Nazi-ism, Fascism,
Communism, Socialism and Liberalism is the spelling, and
that the last group hasn’t got the brains to figure it
out.
- Bill Vance
I like that quote. Who was Bill Vance?
The difference...
I think that your point sums up the topic completely; although we could conclude that Liberalism is a Mental Disorder whereby truisms are designated as false and things not substantive are weighed by good feelings and intent; not empirical or factual outcome.