HP vs torque discussions are usually based on older designs from the pre-CAD days. Intake, internal engine and exhaust were treated as separate systems, so torque curves tended to be round or even pointy shapes. Engines were tuned to move the peak torque up or down the RPM range to get lots of low end torque with less high RPM power or lots of high RPM power and little low end torque, even though the actual peak torque was very nearly the same.
Now, with computer matching of component characteristics torque "curves" can be, and often are, flat from just off idle to redline. Add in such modern concepts as computer controlled variable valve timing and constant velocity intakes and you have torque and power delivery from the same engine.
