I still think it's better than nothing though. I'm sure it can help some people, especially newer players who might wonder if they should get x or y skill. But to those that have been playing Elsword for a while probably won't find this useful. Plus, the OP didn't claim this as in-depth guide anyway. Are there rooms for improvement? Sure. But it's not like this is a waste of space or anything.
We all gotta start somewhere!