The feat doesn't look rectangular at all. With what we see in regards to the height of the blast and the height of the skyscraper, it either reached that high, or knocked it over and it was still destroyed.
If we use an 80x274 city block, then x6 = 1644m, the radius of that being 822m.
V = 1163250000 m^3 or 1.16325e+15 cm^3
Energy = 2.9e19 J, 7.14 gigatons, 3.57 cutting it in half. But then taking the crater into consideration..
Then there's the height of the building, 319.5m. Which would also be the radius of the explosion if that's as high as it went, meaning the radius wouldn't be 6 blocks (actually 3 blocks, since it was stated to be 6 blocks total, not a 6 block radius).
If we use
the game, the blast depth isn't even as high as a bus is long. If we use the
comic, same thing.
Doing the standard nuke equation:
R = Y^(1/3)*0.28
0.822 = Y^(1/3)*0.28
Y = ~25.301 kT 7-C
Dividing by 2: 12.6505 kT
In any instance, it looks more like standard destruction than vaporization.
"Much like for Pulverization, we usually use this value when we see
no remains of the matter that was destroyed in the attack, but in addition there has to be a
considerable amount of visible vapor and/or character statements that imply vaporizatio, usually the latter."
However what possibly does make more sense, is if we try to understand the context of "vaporization".
"6 blocks of waitresses, stockbrokers and tourists, vaporized."
Reading this, it's much more likely that he vaporized 6 blocks
of people (that is, it was a standard explosion that vaporized any people in its radius, but destroyed everything else), instead of literally 6 blocks
and people.
This would also make sense given the many different results we get from calculating the feat.
