I think Dynasty Warriors, particularly the last couple of games have done a decent job of different points of view. I have noticed, like in DW8, that it tends to present the kingdom you're currently playing as in a good light, and the enemies in a bad one, so yeah, Liu Bei is man of the people and so benevolent it hurts, and Cao Cao is a psycho dictator, but then you play as Wei and Cao Cao is a radical progressive who sees people not by status but personal ability, and Liu Bei is a delusional and emotional pain who stands in the way of peace.
Even the Sima family in the Jin storyline and Lu Bu in his come off as not so bad compared to past representations of them.
Dong Zhuo is always terrible though.