For example the big russian psyop that led to Trump getting elected turned out to be around 100k monthly in facebook ads this sounds like much but is not that manpower intensive and also like really cheap, this is of course assuming that this is what led to Trump winning which I somewhat doubt. This is the one big win but I'm sure there's a lot of others.
This is contrasted with US psyops, the National Endowment for Democracy gets a grant of around 130 millions per year. this one little arm of the US government has probably fifty times more money available than all of the russian psyops combined. So US psyops are much better funded and they are just more effective historically, the amount of CIA coups and psyops that the CIA themselves say they've done dwarf any other country.
This isn't even getting into what the effects actually are US psyops are often responsible for fascist coups or heightening ethnic tensions between groups to destabilize a country leading to horrible ethnic conflicts and this isn't limited to just a psyops they'll arm turkish fascist that do violence against kurds and back home there'll be concern but no condemnation of decades.
Michael Parenti's To Kill a Nation is about this process as it was usedcommitted in Yugoslavia.
Essentially, Yugoslavia remained communist instead of surrendering to capitalism like it was "supposed" to, like the USSR and the rest of the Eastern block had. So the CIA began an intense propaganda campaign to turn the different nationalities living within the state against each other. The result was a horrific war, with ethnic cleansings committed by many groups, culminating in a brutal bombing campaign by NATO - the "defensive" alliance - and the splintering apart of a successful multinational socialist state.