I disagree with this post. The best sins? I think people who don't want to play it easy don't depend on these. Many do play with these and have a good success rate. At the end of the day, I don't care how the sin kills the opponent, as long as the opponent is dead.
If those skills put out the highest dps, then I would think a player is bad for NOT using them. However, if there is another way to put out more dps without sacrificing something else, then so be it.
I think what we would need to do is come up with some criteria for all classes to fit in to. For example, health, dps (regardless of specific kills, but the highest dps a class can put out), and etc. Then rate each class in those.