calculating the Uzumaki that Kusakagoat deflected
# ice
Yujis height (Red line) is 5'8 or 173cm tall.
Cm / px = 173/481 = 0.3596673597 cm/px (0.36)
Ice height (yellow line) : 0.36×971 = 349.56cm
Ice width (pink line) : 0.36×1914 = 689.04cm
# uzumaki dimensions
Yellow line for diameter (half it for radius)
small green line for lowball depth
longer green line for highball depth
Ice width : 689.04cm / 36px = 19.14cm/px
Diameter : 19.14×634 = 12,134.76 cm
Depth [lowball] : 19.14×401 = 7,675.14 cm
Depth [highball] : 19.14×648 = 12,402.72 cm
# volume of uzumaki
Formula for cylinder : pi × r² × h
[Lowball] : pi × (12,134.76/2)² × 7,675.14 = 887,643,485,459.13 cm³
[Highball] : pi × (12,134.76/2)² × 12,402.72 = 1,434,396,455,305.50 cm²
# pulverisation
[214J/cm³]
[Lowball] : 214×887,643,485,459.13 = 189,955,705,888,254 J
Tnt yield : 45.87 kilotons (town level) 7-C
[Highball] : 214×1,434,396,455,305.5 = 306,960,841,435,377 J
Tnt yield : 74.12 kilotons of tnt (Town level +)
7-C +
# vaporisation
[25700J/cm³]
[Lowball] : 25700×887,643,485,459.13 = 2.28124376E+16J
Tnt yield : 5.5 megatons (small city level) Low 7-B
[Highball] : 25700×1,434,396,455,305.50 = 3.68639889E+16J
Tnt yield : 8.9 megatons (city level) 7-B
in short, City level Kusakabe is very real and that's why he's the strongest grade 1