Your wood stove is not trying to heat several thousand gallons of water from ‘room temperature’…that takes a few minutes longer 
Okay, but my point is that if a wood stove, with similar metallurgy, can withstand high temps in short order, it doesn’t necessarily follow that a riveted/stayed/bolted boiler can withstand high temps in short order so that all that water can be gotten up to near-steam temps in a hurry. And the temperature gradient in a wood stove is not going to last long. In a firebox where a flue-sheet is proximal, beyond which is 10 tons of cold water, the gradient will be more durable for a longer period, and very sharp.
Crandell
Sorry took so long to reply on this had to call my aunt that had all my Grandfather stuff that was a Radioman in WW2. See my Grnadmother remarried after she divorced my Dads Father and I ended up with 2 WW2 vets one served in Europe as a Ball turret Gunner and the Other was a Radioman in the Pacific. Well at the time he was on 2 Ships in the War First was a Steam powered Conveted Transtport and the Otyher was an LST diesel Powered.
Well the Steam Powered Ship was at Lyte it was after there he got the LST according to the Diary she sent me so I have to take the word of him he died in 2005. They thought they were in a Secured area since they had the Largest fleet Guarding them in TF38 under Bull Halsey. Well all of a sudden the Japanese navy showed up and was shooting the Jeep Carriers that were giving the troops air cover. Now they were at anchor just a Genarator Running for Power Cold as hell on ALL THE BOILERS had been for 30 hours no Shore Power to repair a bad piece of HP steam pipe. Got the Word to GET OUT OF THERE. In less than 1 hour they had the pressure up and the ship underway. Now remember stone cold Boilers they had to Start the Fires from Zero Pressure and move them.