Dawn of war vs StarCraft or command and conquer

[eLdavis]

From time to time, a lot of RTS gamers tend to compare games like StarCraft and command and conquer with dawn of war. While most fans often choose based on their preferences, it can be pretty hard to find a real comparison that is not based on preference or favoritism. How does dawn of war compare in terms of graphics, storyline, and even gameplay with the other RTS games mentioned above?