Horsepower =Torque x RPM / 5252
which is why horsepower and torque lines on a Dyno chart cross at 5252 rpm
if you have an petrol engine producing 200bhp @ 8000rpm you would have 131.3 lb/ft torque
if you have an diesel engine producing 200 bhp @ 5000rpm you would have 210.08 lb ft; torque
so the diesel engine produces more “shove” at lower revs which is easier for normal driving. for ultimate performance a high revving petrol engine is better abut feels flatter at low revs and “peakier”