Thats my website compared to three competitors in 'Link Metrics' on Moz. I spent about $500 on SEO in the past month. My website at around 15 on the SERP and these are in the top ten. So I'm confused, if they're so close on the SERP, why does all of this seem like my website is terrible compared to those. What does it even mean? How do I boost it up?