Of course, dragonul is talking out of his ass and comparing action games to an ideal that doesn't exist, but his point is still technically correct. Tactical diversity is always welcomed in a combat system, either due to unique encounters, change of patterns, enemies adapting and changing according to your behavior, different formations of encounters and so on.
Of course, Dark Souls has plenty of that as well, but Witcher 2 for example doesn't. That's why the game is so much more easier at the end. The arena battles for example, during chapter 2, those were some of the easiest fights in the whole game and a massive disappointment. Or the boss battles, equally retarded shit.
Now take the Mr Freeze battle in Arkham City, that was a cool change of pace. It was still fairly pattern-based, but it was designed a bit different so it can allow variety. To sum it up, you have various methods in which you can stealthy hurt him: some are typical tactics used before (kicking him from a higher spot), some are new. Every time you use one method, he learns to counter it so next time it can't be used any longer. That was probably the best part of the entire game, especially compared to other boss battles which were typical boring crap (evade charge attack until he runs into a wall, pummel him 'till he wakes up, repeat).