Still wondering if I am reviewing correctly.

in Am I really reviewing correctly? my question was about reviewing questions.

This time it is about a first answer.

In my private opinion the quality of answer needs at least as hight as the question.

Then I was asked to review an answer for the question question: Meaning of $A^A$

There was an answer (sorry I cannot find the proposed answer anywhere anymore), the problem is that I don't understand matrixces (what is I presume the the subject of the question)

There was also a comment from i guess a more knowledgable persons than myself,( I think it was http://math.stackexchange.com/users/55235/git-gud ) and he commented something like "you misunderstand the question , you are confusing this ".

(in this case the comment was probably correct)

How should I review this answer?

I decided to skip the answer.

Was my action correct?

And what if next time there is no such help of a more knowledgable person, it it the best to skip answers i don't understand or should I say "no action needed"?