Welcome to the Q&A Forum

Hi all, I have run on page keyword optimizations with exact terminology used to find our company service or our competition on google. We have ranked A, with almost all points complete. I did the same for our main competitor and they ranked F. Then i did page positioning on Google and they get on page 1 fifth line and we get page 7.  We have plenty of unique content and extensive website.
Could there be any other reason than reason for this other than backlinks? Many thanks for your help.