Without Custom Question Lists on the left, with Custom Question Lists on the right:
The one with CQL is missing the part where it says "16,828,657 questions". I frequently use this number when I'm looking at smaller lists (e.g. questions with two specific tags) to see if it's practical to read all the questions or if I need to refine. I shouldn't have to scroll down to midway down the page (which is where the pagination controls are on narrower windows) and do math to get this number.