How to improve writing (no. 101)

From a New York Times article about unpaid labor in academia:

[A lecturer] says she has seen a devaluation, even though adjuncts often have similar credentials to tenured professors.

I take it that the mistake here belongs to the reporter. Ask: what is similar to what?

Corrected:

[A lecturer] says she has seen a devaluation, even though adjuncts often have credentials similar to those of tenured professors.

Related reading
All OCA How to improve writing posts (Pinboard)

[This post is no. 101 in a series dedicated to improving stray bits of public prose.]