Fuck it
Let's just go with a super low end of 1 sextillion. That's about 2.4x10^11 tons of tnt. The same amount of energy as the asteroid that slapped mercury. Triple thay shit, cause we shaking 3 planets here, that gets you 7.2x10^11 tons of tnt. Which is 8k times less than what's needed to destroy the earth.
This doesn't take into account anything in between those places nor the distances apart and it's using the lowest end possible. BUT most importantly this math is coming from me of all people and I have no idea wtf I'm doing so don't take this as legit in any form till someone with skills does it
This thread's getting out of hand, so I think it's best if I just dip, everyone's free to come to whatever conclusion they come to but I just wanted to share this at least. I recall someone on here saying that the Soul King's palace is excluded from SS ( even though I recall them being physically in the same space since characters travelled back and forth) I went ahead and differentiated between the two here. Again I don't know what the accepted distance between the realms are or what size we have the dimensions themselves at. But I'll assume the distance between them as the same as the diameter of the realms themselves. Going by square inverse law with the palace as the epicenter for where it stretched out (I used 100 pixel circles for the realms because its a flat round number) the diameter of the shockwave would be 550 pixels. x5.5 the diameter of the individual realms.
If we go by Earth's diameter as the diameter of the realms (extremely low end since that doesn't account for the atmosphere but shaking the atmosphere seems pretty unquantifiable so whatever) the surface area of Earth = 5.1e+8 km^2 and the surface area of the shockwave is 1.54e+10 km^2 the shockwave's surface area would be x30.1960784314 that, if you do want to multiply that with the low end of 240 Gigatons shaking the Earth it would be
7.24 Teratons (Country level).
Or we could go with Earth->Moon distance for the realms' diameter (400,616.8 km [earth->moon distance + Earth and moon's diameter]) that would make the diameter of the shockwave 2,203,392.4 km and a surface area of 1.53e+13 km^2 divide that by the surface area of Earth (5.1e+8 km^2) the difference means the shockwave is x30,000 multiply that with the 240 Gigatons (1 Teraton if you want) that would be
7.2 Petatons (Continent level) (30 Petatons if you want to use the 1 teraton comparison).
That's again assuming that all of the realms distance between each other would be the same distance as their respective diameters, if you want to go by the distance Ichigo's group travelled through via the Dangai and Garganta I personally think it would be much much lower (you might as well put them next to each other the difference would be pretty imperceptible because the group didn't really seem to run for very long when they reached SS in the first arc). or if you like you can't really use square inverse law because they're in completely separate realities and thereby making the distance unquantifiable you could probably use the Earth-Moon distance above (5.04e+11 km^2 from 400,616.8 km) get the difference from Earth's surface area (5.1e+8 km^2) to get a difference of x988.235294118 multiply that by the 240 gigatons then multiply that by 3 (because Earth,SS and HM realms being affected) would get
711.529 Teratons (Country+ level). I don't think you could factor in "shaking the sky" or the empty void of space between Earth and the moon since for any of these that's pretty unquantifiable and there's not really a method i've seen that you could apply things like seismic or earthquake style calcs for the sky or space plus the mass of the Earth's atmosphere is only a millionth of the mass of the earth itself so I don't think that would add much (outer space even less so) I added only what I think would be quantifiable values (ie the shaking of the planets themselves and the use of square inverse law)
For the largest difference above (the shockwave with the earth-moon distance for each realm) If we go by volume instead of surface area then via the diameter the result would be 5.6e+18 km^3 for the shockwave divide that by the the Earth's volume (1.08e+12) gives a difference of x5,185,185.18519 multiply that with the 240 gigatons that reached up to above
1.24 Exatons which would still be in the Multi-Continent range and be around 1/23rd Moon level (which the OBD wiki has at 29.6 Exatons). That's as high as I could get with it.
But that's just what I came up with personally, everyone else is free to draw their own conclusions. I don't think Sailor or Xho will be satisfied with these results regardless so I'll just move on to a different thread because my back and forth with them will just get more derailed, I just wanted to share my two cents before dipping out of this thread.