There is a lot to compare between the two works, but one interesting approach is to compare the two central characters: King Lear. What's interesting about the comparison is how similar the two Lears are. One of Bond's goals in creating the play was to drag Lear into a contemporary situation but leave his essential character unchanged. Bond wanted to show how Lear's faults reflect upon contemporary society, and saw him as a symbol of the West in general.
One of the biggest changes is the character of Cordelia. In Shakespeare's version, she is seen as a force for good who moderates her father's murderous behavior and ultimately excuses him with her love and forgiveness. Bond does not allow Lear to have a forgiveness figure; his Cordelia is a victim of the war.