Task A is hard, task B is not that hard, what can I say? Task B is simpler (easier)?
Because I am afraid it may imply that Task A is simple(easy) but task B is simpler(easier)!!
However, these systems are mainly designed to extract structured data such as a product or a service information from complex web pages. For a simpler task such as extracting the main article from a news website, the features they provide can be excessive.