Well, when you consider the cam runs at half the crankshaft speed, then even a guy like you should be able to handle the maths for how many times the lifter or valve is cycled at 6000 RPM.. Or can you??
" the ability of an engine to do work is based on the "area under the curve". By increasing horsepower at lower rpm, the torque/horsepower curves are higher at lower rpm. The cumulative additional horsepower under the curve is now higher at lower rpm and increases the engine's ability to do work. "
Ha, where did you cut and paste that from LOL...