See, here's the thing for me. I played Dawn of War, and I played the hell out of it. I played the Dawn of War II Beta and played the hell out of it- and I really enjoyed Dawn of War II more.
To me, this is what a Strategy game on a military scale should be- matching wits with another commander on a battlefield. Taking points, holding points, co-ordinating troops and setting up fields of fire. Fire and maneuver actually matters in Dawn of War II, as do heavy weapons and suppressing fire. It's fantastic, really, and I love it. I just need to buy the game now.
And, as for the Space Marines showing grief over dead civilians, let me just say this: they're still human. First and foremost, Space Marines are the defenders of the Imperium of Man and Humanity as a whole. Each chapter of Space Marines also varies, as their order and belief varies from chapter to chapter. It goes beyond battle doctrine.