God of War 3 was the first GoW tile I played and after being blown away by the scale, art direction and beautiful graphics of the game it is a shame to say that I was just completely underwhelmed by the game play. I just got bored with it and had to kind of force myself to finish it.
I selected neither as I have not yet played Heavenly Sword so I could not give a fair judgement between the two titles.
I quite enjoyed Dante's Inferno.