I'm using Ahrefs.com for backlink analysis.
The site has grown significantly in last months - this website. The number of indexed pages is around 1040 at the moment. Also, our blog has produced some decent, shareable (around 1-2K shares) content recently. The number of organic keywords in top 100 is higher than our competitors.
In all these categories, site outperforms some competitors. Despite this, Ahrefs is reporting organic traffic 2-3 times lower than them. Why?