Myth: "Their traffic estimate tells you a competitor's real visits"

Myth: "Their traffic estimate tells you a competitor's real visits"

People quote Ahrefs/Semrush traffic numbers like gospel. I checked both against a site whose real GA I had access to.

Reality: tool estimates were off by 40-300% depending on the site's traffic mix.

Why they diverge:
➕ Both estimate organic from ranking keywords × CTR models
➖ They miss direct, social, email, paid, app, branded entirely
➖ Small or new sites get wildly inaccurate estimates

Semrush:
➕ Separates paid vs organic estimate
➖ Still organic-only as a base

Best for: relative comparison (Site A vs Site B trend), the estimates rank correctly. Absolute 'they get 50K visits', no, that's just organic-keyword math.

Price-vs-value: don't pay extra for 'more accurate traffic', no tool sees a competitor's analytics. The myth treats a model as a meter.

Neutral.

Pick estimates for relative sizing. Skip them as a real-visitor count.