Just so we're on the same level here - your own article states that high speed rail as it is most commonly referred to means speeds of above at least 200km/h, more commonly beyond 250. Lower speeds are "higher speed rail" in America, or regional/local lines in Europe. My local lowest tier urban mass transit has a normal speed of 160km/h.
America has ONE Line with speeds beyond 250, and that is where all except one of its 200+ speeds lie aswell. That is, sorry, a joke. For one line a network does not make.
Look at that same graphic in the article on the high speed network in Europe and tell me they are even close to comparable.