The tradition then a fortress lay down its arms, and hence save the attacker from a very bloody assault, is treated extremely mild.
So can you quantify harsher peace treaty? Was Imperial Russia force to take the enternal blame for starting WW1 becuse they did mobilize first? Did Russia lose all there colonies? Have to give upp its large fleet? The war indemnity? % of core land Russia lose vs German lose in the peace? I know Russia love to point out it they lost proportionally more "productive/useful" land... but then we are back how to quantify harsher peace treaty.