Well the feat Carver wants is weird.
Yes, the shockwaves stopped the rain (which is what Carver is jizzin about).
That means we are basing the punch's power on collateral damage. Fine.very impressive.
None of the surrounding buildings, however, were damaged. None of the glass was shattered. None of the nearby humans were affected.
In comics, we have plenty of times windows in surrounding buildings were shattered from the force of a punch. So are they equal?
Ordinarily I wouldn't put stock into collateral damage, but as this challenge is about collateral damage, well...
Even Saitama's clothes aren't torn. Guess it's one of those PIS moments though. Then that begs the question if all the glass etc was meant to be broken, but as Magnon says, it's rare (I guess comics just don't have fights in the rain? Lol).
It's a strange feat.
Apparently the shockwave was powerful enough to blow apart the clouds above, as it didn't start raining again. Yet somehow it didn't affect any of the glass in the nearby buildings, didn't affect any of the bystanders, and only made Saitama's cape flap a bit.
How do we even begin to quantify that?