Hmm, neat Soto trick with their microregulator valve in their video, assuming that both upright stoves are using the same cannister fuel types, it looks like the Soto has an incredible advantage, but what is probably happening here is that the Soto is just burning a much higher percentage of the propane, i.e. if Soto had kept the video running then the Soto stove would have went completely out around the 10-15 min mark whilst the other stove would have continued for over an hour or more.

All that was needed for the other non Soto stove to match the Soto stove was the valve to be opened up and it too would have conked out around the 10-15 minute mark as it burned off the propane content of the canister.

It would be interesting to compare real low temp performance between the Soto and say a Primus Express Spider and a Etapower pot for performance and efficiency. I think I could easily live with the addition 200 gms considering the advantages the Spider stove will give.