The one who placed 1 has some real problems with literature especially a historical peace. 
Too much decapitation? Graping? Maybe even Lu Bu actions and 0 consequnces? 
Well tough luck snowflakes this kind of stuff is still happening even today, you are just defended by "polite" society that will likely cease to exist soon in part due to your weakness. 
4/5 Not bad, has it's flaws but is quite a good historical piece. Like i stated it doesn't shy away from showing us what those times represented.