Hello, i been working on monk currently I am level 50 with it and ive read the abilitys but honestly im still a little confused.

For one example twin snakes, and the power strike, seems basicly the same but actives my dot and the other one at the end. The only difference ive noticed is the bonus for one is on the side and other is at the back.
Another question is why do i seem weaker with fire stance on. And ine last one next ability form changes whats the point of that.

Sorry btw for my wording ive read it, but im still confused on it honestly ive been lvling through dungeon practicing however im rlly unsure if i got it right.