In The Malazan Book of the Fallen, we see the Malazan Army using Moranth munitions at many points throughout the story. I can get a sense of how destructive most of these are (sharpers, crackers, flamers, etc..), but while reading The Bonehunters (specifically the siege of Y'Ghatan) I realize I don't have a good sense of the destructive power of cussers. I initially thought they were similar in power to a stick of dynamite, but looking at videos of sticks of dynamite exploding doesn't get near the destruction I envision a cusser causing.
Are there any insights into how powerful a cusser would be in terms of explosives we have in reality? Are there even explosives in reality to compare cussers to in order to get a sense of their destructive scale?