Well said mate, it is not all about merit, there are some factors that may affect why some posts don't have merit.
1. It is not that useful post.
2. It is not updated news.
3. Plagiarism.
4. Posted in a wrong board.
5. Already posted before.

Those are the only things I know why some posts are not getting merit, so always keep creating useful and help posts to help everyone in this forum.

There is no board that has the highest chance to be given by merit as long as you have created a useful posts it will be given a merit.