I'm not talking about voltage. Prosharp's website says it uses 24v, 1.2A, 30W.
The Sparx also uses DC but the power supply is internal and its specs are not publicly available, it only says 200W (first gen.) or 140W (second gen.) on the back label.
Does the Prosharp Home really only use 30W? I can't see how such a small motor would be able to cut steel especially compared to the Skatepal at 150W and the Sparx at 200W/140W.