I understand your point, but I don't think that's a good reason not to compare them. They feel similar enough. You block, you roll, you wait for an opening. The fact that the Witcher 2 doesn't focus in the combat as much as Dark Souls isn't an excuse for its shortcomings, and it certainly isn't an excuse for how they imposed artificial limitations in the combat for the sake of character progression, like I explained with the Whirl skill.