That the effect of the building's mass is much greater than the TNT-equivalent would apply, in the same way that while a 10 Watt bulb is barely bright enough to

That the effect of the building's mass is much greater than the TNT-equivalent would apply, in the same way that while a 10 Watt bulb is barely bright enough to read by, a 10 Watt laser will set your book on fire.