Try this one, modify the script to fit your needs:
Compare Datasets_2019-04-15_1605.proj (11.5 KB)
editTable = event.source.parent.getComponent('Edit Table')
masterTable = event.source.parent.getComponent('Master Table')
editData = editTable.data
masterData = masterTable.data
editSet =set(tuple(row) for row in system.dataset.toPyDataSet(editData))
masterSet =set(tuple(row) for row in system.dataset.toPyDataSet(masterData))
print editSet
print masterSet
print editSet - masterSet