"To highlight the differences" means to draw attention to the contrasting or distinct qualities or characteristics between two or more things. Full definition
It also highlights the difference between self regulation and self control. (kidsmatter.edu.au)
It will also highlight the differences in attitudes between men and women when it comes to home buying as it relates to each topic. (remonline.com)
The visual switch between old and new make a space feel interesting and will also highlight the differences between individual pieces. (idealhome.co.uk)