I appreciate your effort, but my comment probably wasn't what you would call "good faith".

Even leaving aside the rather odd US scale, a liberal economic system is inherently capitalist, since capitalism is defined by private ownership of the means of production, wage labour, exploitation of workers and pricing in a market. All this is still present in what you call a liberal economic system (even if some of these effects are dampened) without touching the root of the problem, so it is indistinguishable from, or even equal to, capitalism, whether in an unregulated or regulated flavour.