Calc that blood destiny (arslan senki anime)

for this calc i'll assume the guy is 180 cm tall
according to human body proportions a body height=7.5 heads
180/7.5=24cm

head 50px
sword width is 44px
making it 21.12cm

ignore daryun head because perspective fucks it
sword width is 23px(21.12cm)
trunk height is 305px
trunk radius is 105.5px
TH= 2.801 meters
TR= 0.969 meters
inplugging these values on the cylinder calculator i get

potential energy= mass x gravity x heigth
tree density goes from 160-1330 kg/m^3 according to this chart
i'll do an arithmetic media between the two to get some short of average end
160 +1330=1490
1490/2=745kg/m^3
M=D x V
M= 745 x 8
M=5960 kg
now it's time to find heigth

the guy head is 75px (24cm)
his torso is 227px
the distance from his head to where the truk is is 379px
T=0.7264 m
D=1.2128
average horse heigth= 60 inches (1.524 meters )
total height= 1.524 + 1.2128 + 0.24 + 0.7264
TH=3.7032 meters
PE=MxGxH
PE=3.7032 x 10 x 5960
PE= 220710.72 joules
or