Just for reference, typical high end steels like Columbus Niobium have ultimate tensile strengths of 160,000 to 180,000 psi, so high carbon steel is what I would consider low-end steel. Most production 4130 bikes are heavier and stiffer than a lot of riders really like. A bike frame made out of high carbon steel is 5-10% heavier, and thus stiffer, but it isn't really different in any way that is of consequence to a rider. To me, ranking steels in that category seems a little pointless. To anyone that's not making thousands of frames a year, the difference in price is inconsequential.