I made the experience that flags I place for marking a question (or answer) as low quality gets disputed very often. So I think I must have some sort of a misunderstanding on when to use them.
For example, I marked the question https://stackoverflow.com/questions/21042422/how-we-add-images-to-sprite-while-using-getchildbytag-method-of-ccspritebatchnod as low-quality, which then got disputed.
The question later got closed due to "put on hold as unclear what you're asking", so there was definitely something wrong with this question. However for me it was clear what he was asking; it was just hard to understand what he was doing.
So when should I use them then? If I find a question to be really low quality, but everything seems fine to me, why not use this flag?