SL 500 (R231): Torque 700 Nm

When reading various car magazines, I always notice that the 700 Nm of the new SL 500 (R231) is extremely high in relation to the 435 hp. No engine with comparable power has such torque. Even almost all engines in the 550 hp class (e.g. BMW/Audi V8) have less torque, although turbos are also installed there, which generally increase the torque. Does anyone know why the SL 500 has such a high torque? t: As a non-engineer, I understood correctly that the torque (Nm) indicates the power that the engine itself gives to the gearbox, and the final power (kW or PS) is then the product of torque and speed, which is why there are the “high-speed concepts” (e.g. old 63-AMG engine), which usually do without turbo and therefore have less torque, but then turn high, while the turbos have more torque and do not turn so high, which is why the power in PS is often similar, but the driving behaviour differs greatly (Turbo can be comfortably driven down, with the high-speed engine more must be switched, so that it always rotates as high as possible)?