Ask what is measurable
“Premium,” “advanced” and “professional” may have no standardized definition.
Look for the comparison basis
A percentage improvement is incomplete without knowing what model, test or baseline was used.
Separate certification from branding
Recognized third-party certification is different from a company-created badge.
Keep the claim if it affects your purchase
Saving the advertised representation can be useful if the delivered product materially differs.
General educational information only. Consumer rights, tax treatment, warranty obligations and return remedies vary by seller, product and jurisdiction. Use the actual contract/policy and current official consumer guidance where rights matter.