There's no reason to keep beating this horse. But I will say that is true from a strict joule capacity. And you might get such an explosion if you completely atomize the gasoline with the correct amount of oxygen and ignite it. As far as gasoline vs TNT, the detonation velocity is important. TNT detonates at about 7000 m/s vs gasoline at 1800 m/s.And gallon on gasoline has higher energy content than 60 pounds of TNT or C4.
Takes helluva big mansion if you can't level it with 60 pounds of TNT.
Now 1 pound of TNT won't blow a house to ground but 1 pound of wheat flour will do it.
But at any rate, maybe gasoline could demolish that house. Which is still more believable than the battery doing it.