Review articles better than regular ones?

I don't know why review articles are much better than the regular ones? Is it that they have better chances to make the backlink last longer than the regular one? Or is it the content and niche keyword much more effective than a regular one? We'll for me, it doesn't matter. It's still part of the SEO strategy which we can post backlinks within the post or after the post. The only problem is, your link must be relevant to the topic. Like for example, if you review a Blackberry application, the link must lead to the website where the Blackberry application you wanna review really exists, But for the regular article, it is too difficult to post your link because it has less than 50% to be called relevant. Reviews are much more effective than regular as I evaluated.