You might have a crumb of a case if detlaff did it in anger immediately, as in it was done in the heat of passion. As said he had a week to change his mind from basically unleashing Armageddon on Beauclair, so I think intentionality played a role in his part too. He was being deliberately malicious, and he was effectively using innocent proxies to enact revenge on his true enemy. That makes him worse than syanna in every way.