First, check what was tested
Look for the full material name, colour and diameter. “PLA from this brand” is too vague when the same company sells basic, silk, matte and modified formulations. The printer, nozzle and build plate should be named too.
Find the result that matters to your part
For a box, the internal opening and lid insert matter together. For a curved display piece, look at the seam and upper surface as well as the flattering front view. For a regularly changed spool, loading and feeder compatibility deserve attention.
Our Copymaster measurements are a good example: the outside dimensions were close to the model, but the cavity was smaller and the lid insert slightly larger. The pieces still had a loose fit. One number would have missed that story.
Read photographs alongside the settings
Layer height, lighting and orientation change how a surface looks. A picture of a sanded or painted part cannot show the unprocessed print finish. Useful comparisons identify any clean-up and show comparable views.
Keep the claim in proportion
Several different objects on one plate reveal different aspects of a print. They are not independent repeat runs. A single successful load does not prove that a spool will never jam, and a dimensional test does not establish strength.
A review can still be useful within those limits. What matters is whether you can see what was done, rather than having to guess.